The installation position is varied, includes a locking bar that attaches to a round tube, anti-theft bolts such as handlebars Easy to install, instruction. Suitable for all half-helmets, full-face helmets and crash helmets. Cable lock can be perfectly used to secure your helmet, your , your jacket, your groceries, etc. Suitable for 20-26mm handlebar tubes, engine guards, rear bumper, frame tubes or any long section of straight tube. Suitable for all motorcycles, street bikes, scooters, electric vehicles and bicycles. Made of aluminum alloy, which provides safety and toughness, waterproof, rust-proof and corrosion-resistant. Size: 7.6cm/2.99in x 6.5cm/2.56in x 2.3cm/0.91in. Color: Black Material: Aluminum Alloy Package Contents: 1 x Bicycle Lock Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.