Upgraded Adjustable Hook: This is an adjustable hook with anti-silp gasket to protect your equipment. Fits almost any round tube with a diameter of 2.1-3.6CM/0.82inch-1.41inch. Easy to install: This knee scooter hook is easy to install. You can mount the metal hook on the round tube at any angle you want. More Useful:The utility double hook can be used for electric scooters, e-bikes, , bicycles, motorcycles, kid's kick scooters, all-terrain knee scooters, etc. Made of high quality and aluminum alloy, Anti-dislodging nut, chamfered design and rubber sleeve protection to prevent scratching Safe Design: Made of high quality and aluminum alloy, upgraded chamfered design, and rubber sleeve protection can effectively prevent accidental scratching. Product Name: Scooter Hook Scope of application: e-bikes, , bicycles, motorcycles, kid's kick scooters, all-terrain knee scooters, etc. Colour:Black Material:Aluminum alloy Package Contents: 1 x Hook 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.