The KS hardened security chain is high quality tempered steel.
Usage and suitable padlock
The 8KS we recommend for middle security applications. It will beat a cable every time, but it is probably better suited for cheaper or kid bikes, valuable patio furniture and the like. It is a step up from the 6KS and is already well suited for storage gates and minor storage facilities.
You should pair this chain with a medium security padlock, preferably with a hardened steel shackle of the same diameter. For higher security alternatives look below.
- Security chain made of special hardened steel
- Top security against all types of aggressive attacks
- Fabric sleeve prevents paint work and chrome from damage
- Chains in barrels: customized lengths available
Why is quality extremely important for hardened steel products?
The multi-stage tempering process ensures that the chain is not too hard. Hardening is a real art. Not only does the special alloy steel need to be highly controlled, but through thousands of hours the skill of the factory is honed. Timing is critical. If the chain would be hardened too long or too hot, that would make it brittle (think of glass shattering). If it is not hardened enough, it will be soft like the chain you can buy at your local hardware store. Rigorous quality assurance processes for incoming and outgoing product is essential.
I have personally seen Rockwell testing and it very important to be diligent with every batch. That is why you do not want to go the cheap route, you would be better of just buying the cheap soft chain from the hardware store.
ABUS is one of the biggest bike security manufacturers in the world, and their bike chain comes from the same factory, securing everything from a kids bike to a $50,000 Custom Harley Davidson.
We recommend the 10KS (3/8" diameter/cross section) for gates and multi purpose locking off the ground. Without the leverage of the ground, it is virtually impossible to cut even with 5' bolt cutters. If the potential thief would have a little more time or could get into it with the ground as leverage we recommend the 12KS or 14KS chain (1/2" and 9/16" diameter/cross-section respectively.)