This lock is made of material. It is strong-withstand, flexible, easy to install and easy to use. It can keep you away from bicycles burglary. It is stable and durable, and is the best partner for outdoor cycling, to make sure that you can ride your bicycles happily in the outside without worrying of a theft. Features - Color: Black.(There is color difference) - Material: Zinc alloy, steel. - Size: 5.50X2.00X0.26cm/2.16X0.79X0.10in - With a combination lock feature, you don’t need to worry about losing your . - Setting your own 3-digital combination prevents thieves from using the to unlock your lock - It is made of material, with lock, not easy to deform and is a good choice as a gift for those people who like outdoor cycling - A great guard for your beloved bike. It can keep you away from bike burglary Package list: 3 x Bike Lock