Okay, let's talk serious security for your valuable equipment! This INTEKIN security chain is built like something from a fortress - the 10mm heat-treated manganese steel provides industry-leading 14-ton cutting resistance, meaning bolt cutters basically stand no chance against this thing. The 4-foot length (that's 120cm) gives you plenty of chain to secure bikes, motorcycles, ATVs, trailers, containers, or anything else valuable to fixed objects. The square-link design is brilliant because it provides maximum resistance to cutting tools - much better than round links that can be easily gripped by cutters. Weighing in at 6.4 pounds, this chain has substantial heft that alone acts as a theft deterrent. The zinc-plated finish with protective fabric sleeve prevents rust and corrosion, so it holds up outdoors in all weather conditions. The included O-ring gives you an extra 40% usable length, adding versatility to how you can secure your items. It even comes with a heavy-duty canvas storage bag to keep it organized and prevent it from scratching your equipment. But here's the best part: INTEKIN offers a lifetime replacement guarantee if the chain is ever compromised during a theft attempt - that's how confident they are in its strength. Whether you're securing an expensive e-bike, motorcycle, ATV, trailer, or anything else you can't afford to lose, this chain provides peace of mind that your property is protected by one of the toughest security chains available.