Flat Wrench For 8-Notch Shimano® and ISIS Drive® BB Cups

• Fits 8-Notch Shimano® Octalink and ISIS Drive® Bottom Bracket Cups.
• Features 39.8mm inner diameter and 36.8mm tooth diameter.
• Designed to stand up to the harsh conditions of professional use.
• Precision laser cut design with ergonomic cushioned grip.