QUALITY: This Bikehand YC-27BB is bottom bracket wrench. 10 inch whole length to provide great leverage and is made of high-quality heat treated steel for improved functionality and longer life.<br/>COMPATIBILITY: Shimano 16-Notch X 44mm: Fits 16-notch, 44mm diameter external bearing bottom bracket cups including Shimano Hollowtech II, Campagnolo Ultra-Torque and Power Torque, Race Face, FSA, SRAM, Truvativ, Chris King, and Phil Wood outboard bearing. Also fits disc brake rotor lockrings with 16 external notches. NOTE: Will fit Shimano TL-FC24 and TL-FC25 adapters.<br/>NOT FIT: 16-notch bearing cups with an outside diameter of 41mm. Such as Shimano BBR60 Ultegra , 16-notch bearing cups with an outside diameter of 39mm. Such as Shimano Dura-Ace 9000 series and XTR 980 series, BB9000 DUST CAP TOOL: will NOT fit the new Shimano Crankset Dust Cap (which is bigger than old one) Such as: FC-6800<br/>GRIP: Better grip with rubber coated handle and long enough for more leverage.<br/>