BBT-001/B - Shimano Crankset/BB Preload Adjuster ToolBBT 001 B Shimano Crankset BB Preload Adjuster Tool This tool is designed to easily and precisely tighten and adjust the bearing preload cap on Shimano cranksets. Designed with a 3 8 inch drive on the back for torque wrench attachment. Torque recommendations for Enduro BB bearing types are laser etched on the flats for convenience. This Enduro tool, like most of our tools, is proudly manufactured to the highest standards at Sonny's Bike Tools here in