Bike axle wrench, a useful wrench for undoing Shimano Hollowtech II bottom brackets. Multifunctional repair tool set, durable and strong to last and fits well Feature 1. Made of stainless steel and strong felt 2. Comes with the preload tension tool 3. Fits externally ringed bottom bracket 4. Quenching treatment, sturdy and durable material Specifications Material: Carbon steel Type: Wrench, Spanner Wrench Thickness 3.5mm Color: Black Length: 22cm Width: 7.7cm Fit: Mountain bike Convex inner diameter 44mm Concave inner diameter 46mm Plastic lock wheel diameter 15mm Package Includes: 1 x Bike Bottom Bracket Repair Wrench Note: Please allow slight dimension difference due to different manual measurement. Colors may vary slightly depending on monitor settings.