This combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending and flexing, with a molded handle for comfortWorks on 1/8` fixed gear sprockets and single speed cassettes1` (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring ToolsFeatures hardened pins to keep the chain in placeChain WhipSR-18.2UPC/EAN/GTIN: 763477006981