Made of high quality anodized Aluminum. Compared with the bottom bracket tool made of ordinary materials, it is strong and durable. It has excellent anti-corrosion and anti rust performance and long service life. Application:Suitable for Shimano bb80, bb5700, XT bb70, BB51, Campagnolo, Chris king, FSA megaexo, hope, SRAM / truvativ GXP, race face X-type, surly, wheels, fulcrum, etc Installation requirements: ratchet / torque wrench compatible with 3 / 8 inch drive. size: Product outer diameter: 50mm Inner diameter: the distance between convex points is 42.54mm, and the distance between concave points is 46.83mm Aplicación: 1, Compatibilidad: Compatible with for 16-slot bottom bracket tooling accessories, rated for 44mm OD Fits for Shimano BB80, BB5700, XT BB70, BB51 and previous external bearing threaded cups Also fits for many external thread types such as Campagnolo, Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-style, Surly, Wheels, Fulcrum and more Fits 16-slot rotor disk lock rings Precision CNC machined aluminum, anodized and laser engraved for easy identification, features ratchet/torque wrench compatible 3/8inch drive 2,Applicable model: Suitable for Shimano bb80, bb5700, XT bb70, BB51,Campagnolo, Chris king,FSA megaexo, hope,SRAM / truvativ GXP, race face X-type, surly, wheels, fulcrum, etc Material:aluminum colour:blue Package Contents: 1 x 16-Notch Bottom Bracket 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.