Fangrui Product Details 1. The Installation Position Is,comprises Locking Bar Unit That Clamps Onto Round Tubing, Anti-theft Bolts Such As Handlebars. 2. Easy To Install,no Instruction. 3. Fits All Half Face Helmet, Full-face Helmet, And Crash Helmet.this Cable Lock Can Be Perfectly Used To Secure Your Helmet, Bags, Jacket, Shopping Bags, And More. 4. Fits For 20-28mm Handlebar Tubing, Engine Guards, Rear Bumper, Frame Tubesor Any Long Section Of Straight Tube. Fits All Motorcycles, Street Bikes, Scooters, Electric Vehicles And Bicycles. 5. Made Of Aluminum Alloy Material, Which Provides Security And Toughness, Waterproof, Rust And . Colour:black Material:metal Package Contents: 1 * Lock Head 2 * Key 1 * Anti Slip Adhesive 1 * Installation Tool Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.