The extremely secure CORVID K chain lock is almost silent but also extremely durable. With 360° rotation and Easy Entry locking, it is simple to use, while the protective cover keeps the locking mechanism protected from water ingress and dirt. The Cone + closure further reduces the risk of theft and makes locking and unlocking easier. The Grip + surface technology ensures maximum grip. A rubberized surface that prevents corrosion and protects your frame from scratches.