Pedro's Pro BB Wrench, Shim. 6x44 Precision laser cut design with ergonomic cushioned TPR grip and 3/8"" drive for use with torque wrenches. Superior material and optimized heat treatment outlast the competition. Fits the 6-notch lockring used on Dura Ace 7700 and XTR 950 Bottom Brackets and other lockrings. Interface has 44mm OD (cup clearance) and 41mm ID (tooth inside diameter). Pedro's Pro BB flat wrenches are made from 4mm thick, precision laser cut, heat-treated tool steel for maximum strength and lasting performance. Features an ergonomic single-ended design with cushioned TPR grip for leverage & comfort and fits the lockring used on Dura Ace 7700 and XTR 950 Bottom Brackets and many other lockrings with 44mm diameter and 41mm notch diameter.