"Anti-Theft Heavy Duty Security Disc Lock/Padlock  Simple and easy to use this bike disc brake lock is made from a solid cast of steel, iron and zinc alloy. This stylish compact theft deterrent effective tool gives the owner the required security and can be stored in pockets also, until it is needed for duty again. Sturdy Construction This disc brake lock is made out of solid steel, zinc and alloy which makes it very difficult to break, giving the valuable security required for your bike. Comes with Two Keys This disc brake lock for bikes comes with two keys. This gives you a spare lock and also gives the option of giving a key to someone else. Nearly Impervious to Drilling Since the lock is made from steel, iron and zinc alloy it is almost impossible to drill through the lock and hamper the bike security.   Features Made from solid cast of steel, zinc and alloy Simple and can be stored anywhere Impossible to drill Stylish and compact Specification Color: Black  Material : High quality stainless Alloy  Keys number: 2 key  Lock slot depth: approx. 47mm Lock slot width: approx. 8mm Lock column diameter: approx. 6mm Weight: About 132g  Purpose: Lock bicycles, electric cars, motorcycles disc brake pad  Compatible with: Motorcycle, Mountain Bike Bicycle, Motorbike" Read Less