The lock is made of metal material,which is solid, and anti-,attaches to the disk making it extra difficult to remove without the key,difficult to remove it without keys when attached to the bike,which is lightweight and easy to store or carry,effective Features: 1.HIGH QUALITY MATERIAL:The lock is made of metal material,which is solid, and anti-. 2.WIDE APPLICATION:Mechanical lock core is rigorous design so that technical opening is very difficult,which is suitable for motorcycle,. 3.HARD TO TAKE OFF:The lock with two keys,attaches to the disk making it extra difficult to remove without the key,difficult to remove it without keys when attached to the bike. 4.ANTI-THEFT:High quality lock cylinder ensures the safety of your bike/motorcycle and protects them from theft effectively. 5.PORTABLE DESIGN:The lock with small size,which is lightweight and easy to store or carry,effective and convenient to use. Specifications: Type: Bike Anti-theft Lock Material: Metal Color: Black, Red, Blue (Optional) Weight: approx. 121-124g Size: approx. 5.5 * 4.4 * 2.2cm / 2.17 * 1.7 * 0.87inch Lock Cylinder Diameter: 6mm / 0.24inch Quantity: 1pc alarm lock with 1pc plastic frame and 2pcs keys Package Included: 1 x Bike Anti-theft Lock 1 x Plastic Frame 2 x Keys