Product Description Specifications:Function:installation & removal of bottom brackets, installation & removal of chainringsTool Type:Special tool, socketType:multi-toothDrive:Square 3/8"Compatibility:Shimano XTR BB93, Dura-Ace BB9000, Token / Shimano STEPS E6000, E6002, E6050Size:16 notches; outer diameter 39 - 40 mm, inner diameter 37.6 mmTechnical Information:Material:aluminiumFeatures:bottom bracket tool for bearing cups with 16 notches and 39 mm outer diameter, e.g. Shimano XTR BB93, Dura-Ace BB9000, Tokencan also be used as an alternative to Shimano TL-FC38 lockring tool for STEPS (e.g. E6000, E6002, E6050)CNC precision-machinedanodised and laser engraved for easy identificationcompatible with ParkTool BBT-RS tool holding systemManufacturer Number:BBT-49.3 Contents:1 x Order Together:Optional accessories: BBT-RS Bottom Bracket Tool Retention System Manufacturer: Park Tool Company 1185 Eagle Lake Rd Shoreview MN 55126 USA info@parktool.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com