XIANQI Material:bottom bracket spanner is made from strong durable steel which is powder coated in black. Size：crank removal tool is approximately 22cm long, it should be pretty easy to remove or install the bottom bracket all the time 2-in-1 Design: one side design for remove bottom bracket cap, another side design for remove crank. Good for reomve your bike crank. Easy to Use: Used to disassemble or install the axle, the little tool on the other end to remove or install the pedal FUNCTION:Specifically for the removal and installation of bottom brackets Spanner Install Wrench Crank Removal Tool Wrench Bicycle Crank Wrench Repair Install Tool for Mountain MTB Bike Specifications Name: Spanner Install Wrench Material:Carbon Steel Type:Adjustable Spanner Thickness:3.5mm Color:Black Length:22cm Width:7.8cm Fit:Mountain Bike Cycling Convex Inner Diameter :44mm Concave Inner Diameter :46mm Plastic Lock Wheel Diameter: 15mm Character This bike crank removal tool is made of carbon steel which is stronger, harder and durable Bottom bracket spanner makes working on your bike at home convenient to do and will save you money in the long term The bottom bracket spanner makes working on your bike at home convenient to do and will save you money in the long term Package Include 1 * Bottom Bracket Tool