Product Description With the light but robust , magnets hold the supplied inserts in place. Specifications:Function:installation & removal of bottom brackets, removal & installation of cassettes, installation & removal of Center Lock lockringsTool Type:special toolType:ring wrenchDrive:1" hexCompatibility:Hollowtech II, ISIS, Center Lock, Race Face CinchSize:8 mm, 16 mmTechnical Information:Material:aluminium (7075-T6), steel (CrMo 4140)Compatibility:ring wrench end for Hollowtech II bottom bracket with 16 teeth and 44 mm outer diametersocket wrench end for 1" hex insertsCinch and ISIS spline use for older ISIS bottom bracket and Race Face Cinch chainringscassette lockring insert for lockrings of cassettes and Center Lock brake rotors8 mm hex insert for removing pedals and other applications16 mm hex insert for Race Face Cinch cranks, frame pivots and other applicationsFeatures:bottom bracket tool for Hollowtech II with magnetic 1" hex drivefour ultra-light, CNC-machined inserts of hardened, nickel-plated steel includedcompact and light for on the gorobust enough for everyday usewrench can also be combined very well with the Wolf Tooth BBS bottom bracket toolMade in the USAManufacturer Number:FWIKIT01 Contents:The Wolf Tool Components Pack Wrench and Inserts Kit bottom bracket tool set includes: 1 x Wolf Tooth Components Pack Wrench bottom bracket tool1 x insert for Cinch and ISIS1 x insert for cassette lockrings1 x 8 mm hex tool insert1 x 16 mm hex tool insert Weight: red-silver: 333 g Manufacturer: Wolf Tooth Components 6400 W 105th St Bloomington MN 55438 USA info@wolftoothcomponents.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de