ABUS Hardened Steel 10KS 6 Foot x 3/8" Thick Square Security Chain for Bikes, Containers, Trailers, ATV's, Motorcycles and Personal/Industrial Property

Heavy duty, strong with nice cloth wrap. Does not corrode in the weather.

Excellent chain, we use to look our bikes on a motorhome car rack. Have zero fear of someone stealing them

This is used to secure my rolling toolbox at my jobsite near a homeless camp to prevent it from magically rolling away. I have a gun safe lock on it as well to thwart bolt cutters. So far, it's worked great.

The size of the links are impressive and should make it hard for a potential thief to cut through. I also had a special lock that did not have a curved top and found that one end of the chain has a larger link then the other, allowing one to fit through the other so you can use locks without curved tops (which can be cut easily). Most importantly was the 10 foot length. I was able to go through the front and rear tires of TWO bikes and still have enough to attach to a bike rack (or travel trailer tire or tongue). And best of all, the chain is wrapped in a nice cloth which protects my e-bike's paint job. Note that the chain is heavy to carry around (around 5 pounds) but to me the protection and length are worth it. I highly recommend this chain. I have had the chain for many months now and I haven't noticed any rusting or problems.

While I was living in Seattle I had three bikes stolen before I started using this. Still have my bike and this chain

This chain is a brute!Huge chunky links and a very nice cover!

I had my first ever road bike stolen and vowed it will never happen again.Previously, I had used one of the OnGuard U-locks (don't remember the model name/number because I purchased it 11 years ago), and it was nowhere to be found when I realized my bike was stolen. After I bought a new road bike, I did an extensive search of the major heavy-duty locks out there. What did I find? Numerous videos of these so-called super high-security Kryptonite U-locks costing $100+ getting picked in seconds or cut in minutes, not to mention videos of all kinds of cables getting cut like butter. Combination locks are laughable. There are all kinds of marketing gimmicks out there, including thin cables surrounded by a thick layer of rubber/plastic material and anti-theft protection (there is ONE account of a successful claim through the first 4 pages of google search but who knows if that is real; FYI, you need to submit the broken/compromised lock but most thieves take the lock with the bike).After spending days researching different combinations, here is the most secure combination I have found: A heavy duty chain + padlock that cannot be easily picked. Also, a digital U-lock as an added security measure.- Heavy duty chain: There is a video on YouTube that compares different chains. 12KS is the model that was tested in the video. It takes 4-5 minutes in ideal conditions (flat on the ground, allowing a thief to use his/her entire body weight) to cut using a giant bolt cutter. I can't imagine anyone being able to cut this with a bolt cutter if it is several inches off the ground.- Padlock: Again, a quick YouTube search will reveal how easily some of these can be picked. I won't endorse any particular company, but get one that has multiple discs and is not susceptible to hacking with a bump key. The best ones appear to cost $100+.- Digital U-Lock: The concept of keyless, digital locks with thick shackles is promising. There are several different startup companies competing for the next big market. Most of them are shipping their products around September, so we will see how easy/difficult it will be to hack these.PROS:- Very, very tough- Short (makes it more difficult for thieves to maneuver)- The two squares at the ends interlock so that you can use a padlock with a very thick shackleCONS:- Heavy. 4 lbs.- Limited versatility because it is only 2'. Wish they sold a 3' one.OVERALL: Highly recommended, especially for those in SF and NYC.

I have used this chain on two generators. While no chain is totally impermeable to cutting, this chain will give a thief a real run for their time. There are some good YouTube movies on this chain. One of my generators is in a semi-permanent place for work. In both cases with generators out back, I did the following: dug a nice big hole about 2ft deep and 12" in diameter. I put a thick piece of bent rebar through the bottom link and positioned it in the hole. I filled the hole up with cement. It will take a truck to pull the slug of chain and cement from the ground. Later, I put a 6" slab over the same area as a flat working surface for the generators. Unless someone shows up with a rather powerful metal cutting diamond blade or disk, it is not likely they will get off with much of anything. The lock through the links is no weak point either since my lock smith uses the same lock and chain to secure his tools in his truck.If you own a motorcycle this is the perfect chain.A lot of the fancy looking chain in HomeDepot or Lowe's can be cut in seconds with a bolt cutter. Not ABUS. "Snatch and run" will not work with this chain. If you have a shed or the like that you keep equipment in, I would suggest pulling up some boards, digging a hole, and follow the directions above.A neighbor of mine had 5 chain saws stolen in the course of five minutes when he was out. Had he run 6+ft of this chain through the saw handles with one end in cement, nothing could have happened. The crooks just walked into the shed and snatched up the five saws. Easy theft. Also, no one has been caught either.At home you can even create a security point for bikes by the method above. For me burying the chain in cement is key. There are no easy weak points. They can't bend or cut an eye bolt because there is not one. There are hurricane ties that would also work nicely since they used those in houses buried in cement. But, this chain is largely hacksaw proof.