Product Description Specifications:Function:installation & removal of bottom bracketsTool Type:special toolSize:M8 x 1.0 (threaded spindle), M12 x 1.0 + M15 x 1.0 (threaded adapter)Technical Information:Material:steelCompatibility:Bottom Bracket Types: Threaded cupThread-togetherCartridgeCup-and-Cone Bottom Bracket Tools: BBT-27.3BBT-35-12BBT-35-36BBT-47-12BBT-47-16BBT-49.3BBT-59.3BBT-69.3BBT-69.4BBT-79.3Open-end wrench-type tools with handle (e.g. BBT-9, BBT-29, HCW-4)Tools with external spanner flats (e.g. BBT-19.2, BBT-22) Features:spring-based retention system for use with bottom bracket tools from ParkToolhelps with even, controlled application of force for initial loosening and final tightening of bearing cupssecure fit of the tool, no slipping off175 mm long M8 threaded spindle and two-sided adapter with M12 and M15 threadslocknut with 38 mm diameterwasher with 57 mm diameterManufacturer Number:BBT-RS Contents:, consisting of: 1 x threaded spindle M81 x thread adapter M12 / M151 x coil1 x counter nut1 x washers 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