Updated to fit current 12-speed cassettes, this combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending, flexing and wear and features a long, molded handle in addition to a built in hex shaped driver Works on 5- to 12-speed road and mountain bike cassettes and freewheels 1` (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring Tools Features hardened pins to keep the chain in place Chain Whip SR-12.2UPC/EAN/GTIN: 763477007049