Product Description Specifications:Function:general toolsType:wrenchType:open-end wrenchDrive Size:Square 3/8"Compatibility:3/8" torque wrenches and drive tools with 36 mm wrench surfaceParkTool LRT-2, LRT-3, LRT-4 and BBT-18Technical Information:Material:steel (4130)Features:open-end bit for torque wrenchprecise and accurate fit thanks to laser-cut productionmade from heat-treated steelcoated for long durabilityManufacturer Number:TWB-36 Contents:1 x ParkTool TWB-36 open-end wrench bit 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