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OnGuard 8020 Mastiff Integrated Key Chain Lock - 3.57' X 0.39"[110CM X 10MM] Black

4.5 4.5 out of 5 stars 221 ratings

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10mm x 3.5 ft

Purchase options and add-ons

Brand Onguard
Lock Type Key Lock
Item Dimensions LxWxH 11.5 x 8 x 3 inches
Material Rubber
Color Black

About this item

  • X2 Double Bolt Locking Mechanism
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$45.28
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This Item
OnGuard 8020 Mastiff Integrated Key Chain Lock - 3.57' X 0.39"[110CM X 10MM] Black
OnGuard 8020 Mastiff Integrated Key Chain Lock - 3.57' X 0.39"[110CM X 10MM] Black
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Price-24% $45.28
Typical:$59.95
$69.20$73.92$66.33-16% $96.56
List:$114.95
$134.96
Delivery
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it Apr 5 - 10
Get it as soon as Wednesday, Mar 27
Get it Mar 27 - 29
Customer Ratings
Sold By
Amazon.com
Stahlwart
Amazon.com
Amazon Global Store UK
Amazon.com
David's Tools
lock type
Key Lock
High security lock
Key Lock
Key Lock
U-lock
number of items
1
1
1
1
material
Rubber
Specially Strong Titanium Steel
Titanium, Steel, Nylon
Alloy Steel Titanium
Steel
MAXPerformance steel shackle; 3t manganese steel; nylon
shape
Square
Round
Square
Round
Round
finish type
Painted
Unbehandelt
Painted
weight
1.91 pounds
2.5 kilograms
8 pounds
3275 grams
0.25 pounds
15.25 pounds

From the manufacturer

ABOUT US

On the inside, OnGuard locks comes with double and quad-locking mechanisms, bump-resistant cylinders, and hardened steel shackles and chains. On the outside, our locks are fully-coated to protect your bicycle or powersport vehicle from scratches and to shield internal parts from the elements, while the bright color scheme sends a clear warning to thieves: don’t even try! And then there’s the extras: all-tube mounting brackets, five laser cut keys, key-code registration, comprehensive anti-theft programs.

Product Description

3. 5' 10mm (0. 39") titanium reinforced hardened square link chain mated to an integrated X2P Dual Lock Down head featuring new double rubber cover for better protection against bumps and hits. 110cm x 10mm(3. 57' x 0. 39")

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ] MSDS Update English [PDF 58 KB] Link Text Update English [PDF 30 KB]

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OnGuard 8020 Mastiff Integrated Key Chain Lock - 3.57' X 0.39"[110CM X 10MM] Black


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What's in the box

  • ONGUARD 8020
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    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    221 global ratings

    Customers say

    Customers like the quality, performance, appearance and weight of the outdoor recreation product. For example, they mention that it's durable, heavy duty, works smoothly and that the chain is large enough to wrap around their waste. Some appreciate the appearance and find it intimidating. That said, opinions are mixed on the weight.

    AI-generated from the text of customer reviews

    72 customers mention58 positive14 negative

    Customers like the quality of the chain and lock. They say it's durable, heavy duty, and provides peace of mind. The key mechanism is well protected and works smoothly. Some customers also mention that the insurance is a nice plus. Overall, customers are satisfied with the quality and functionality of the product.

    "...Nothing is 100% against bike thieves, but this does give me an extra layer of security. It will definetaly slow down the bad guys." Read more

    "Defintely on the heavy end, but I find it more secure than a U-lock. This also is long, and can definitely tie two bikes up together...." Read more

    "Super strong and durable, although it is quite heavy. Nothing short of a grinder will get through this." Read more

    "...I also like how the lock holds your key when it’s unlocked, until you insert the other end back in again...." Read more

    11 customers mention11 positive0 negative

    Customers like the chain. They say it's large enough to wrap around their waste. The lock mechanism is smooth and the locking head is huge. The chain is solid and long enough to reach around big objects. Customers also like that some of the keys are small enough to put on a jacket zipper or fit easily on

    "...It is large enough to wrap around my waste in case I don't have room (size 36 waist) without feeling cumbersome, but thinner people may not find..." Read more

    "This chain is great...." Read more

    "...I really liked the idea that some of the keys were small enough to put on a jacket zipper or could fit easily on a keychain or in a pocket...." Read more

    "It seems to be of good quality. Locking head is huge. Love the chain cover, it wouldn't allow the chan to scratch the moto rim." Read more

    9 customers mention9 positive0 negative

    Customers are satisfied with the performance of the outdoor recreation product. They mention that it works well, is well protected, and works smoothly.

    "...I also like the key mechanism, which is well protected and works very smoothly. My ONLY complaint... and it's obvious... is the weight of this thing...." Read more

    "...As for the lock, good luck stealing it! It is heavy and will do it's job well." Read more

    "It is a nice heavy chain, that works well for me in my garage kept bikes; so far, so good." Read more

    "So far works great. Haven't had any issues for the first 2 months of use. The chain and lock seem durable, and provide peace of mind." Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the appearance of the outdoor recreation product. They mention that it looks formidable, intimidating, and heavy duty. They also appreciate the sturdy lock and the nice cover.

    "...It's heavy duty, strong, and looks so intimidating to the point where thieves won't even get near your bike...." Read more

    "It seems to be of good quality. Locking head is huge. Love the chain cover, it wouldn't allow the chan to scratch the moto rim." Read more

    "...It looks formidable, and the chain is very solid, however the lock is the corner stone...." Read more

    "It's very strong and is attractive. It also is heavy duty, durable and very effective. I really like it a lot." Read more

    3 customers mention3 positive0 negative

    Customers find the wire cutters easy to use. They mention that thick chains are hard to cut through, and cables can be cut very quickly with small wire cutter.

    "...my bike, but the weight is a good thing since it makes it tough to cut through. I store it in my bike's saddlebag...." Read more

    "...Cables can be cut very quickly with small wire cutters by doing small nips...." Read more

    "...Thick chains are harder to cut. It does weigh a ton so it's not ideal for carrying around for quick trips." Read more

    53 customers mention16 positive37 negative

    Customers are mixed about the weight of the outdoor recreation product. Some mention that it's solid and heavy, while others say that it looks vey hefty and is not ideal for carrying around for quick trips.

    "...The one concern I have is that since its so heavy and long, it tends to swing quite readily into spokes or there frame as you are adjusting it, and..." Read more

    "This is a large lock, heavy! Well built ...." Read more

    "Super strong and durable, although it is quite heavy. Nothing short of a grinder will get through this." Read more

    "This chain is great. It is super heavy so, since I am 5'5" female, I can't wear it over my shoulder when I am riding my bike, but the weight is..." Read more

    heavy and strong
    4 Stars
    heavy and strong
    been using an onguard U lock to protect my bike for over 12 years living in NYC, still hanging nice n strong. so i m confident in this brand. havent use a chain lock before but i heard its the second strongest right after ulock. let see how it goes. using this as a secondary lock + Ulock + alarm + waterproof raincoat to secure my scooter lolupdate:i realize there is a flaws to the intergrated lock with the chain, is they use roll-pins to connect as joint, which is a weak link in the chain, and vulnerable to attack. but 8020 seem to fix it and reinforce it with an extra layer of steel-collar about 3mm and have the roll pin covered up . so i have to deduct a point from this.
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    Top reviews from the United States

    Reviewed in the United States on December 26, 2023
    Size: 10mm x 3.5 ftVerified Purchase
    Reviewed in the United States on March 21, 2016
    Size: 10mm x 3.5 ftVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on December 17, 2019
    Size: 10mm x 3.5 ftVerified Purchase
    Reviewed in the United States on January 2, 2018
    Size: 10mm x 3.5 ftVerified Purchase
    9 people found this helpful
    Report
    Reviewed in the United States on August 16, 2022
    Size: 10mm x 3.5 ftVerified Purchase
    2 people found this helpful
    Report
    Reviewed in the United States on June 28, 2022
    Size: 10mm x 3.5 ftVerified Purchase
    2 people found this helpful
    Report
    Reviewed in the United States on June 10, 2017
    Size: 10mm x 3.5 ftVerified Purchase
    13 people found this helpful
    Report
    Reviewed in the United States on August 26, 2017
    Size: 10mm x 3.5 ftVerified Purchase
    5 people found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    Daniel
    5.0 out of 5 stars awesome chain, bought a 2nd
    Reviewed in Canada on June 23, 2023
    Size: 10mm x 3.5 ftVerified Purchase
    Teodor G.
    5.0 out of 5 stars Great lock, MAKE SURE TO KEEP IT LUBRICATED SO NOTHING WILL GET STUCK WHILE USING IT
    Reviewed in Canada on April 10, 2021
    Size: 10mm x 3.5 ftVerified Purchase
    Irishboy
    5.0 out of 5 stars The best there is at half the price
    Reviewed in Canada on February 18, 2019
    Size: 10mm x 3.5 ftVerified Purchase
    Carlos Arroyo
    4.0 out of 5 stars Coincidencia o error?
    Reviewed in Mexico on May 13, 2019
    Size: 10mm x 3.5 ftVerified Purchase
    One person found this helpful
    Report
    Nari Esquivel
    5.0 out of 5 stars Excelente candado!
    Reviewed in Mexico on May 24, 2019
    Size: 10mm x 3.5 ftVerified Purchase