1. 360 degrees rotation: can rotate 360 degrees to adjust the position, humanized setting, convenient for all kinds of vehicles.2. The materials are more solid, the quality is higher, and the weight is heavier than other brands.3. Correct the transmission transmission problem caused by tail hook deformation.Specification:Name: Bike Tail HookFunction: Used for bicycle on the tail hook of the alignment, correction toolsColour:blueMaterial:Aluminum alloy + stainless steelSize:395 x 165mmPackage Contents:1 * Bike Derailleur Hanger ToolOnly the above package content, other products are not included.Note: Light shooting 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.