Park Tool BBT-22 Shimano Bottom Bracket Cartridge Tool
Park BBT-22 Shimano Bottom Bracket Cartridge Tool is a shop quality tool for installing and removing Shimano and ISIS Drive splined 20-tooth bottom bracket cups. Made from investment cast steel, the BBT-22 utilizes a flat tooth profile to ensure maximum engagement with the bottom bracket cup. Can be used with a 3/8" drive torque wrench, 3/8" ratchet driver, 32mm wrench, FRW-1 Freewheel Remover Wrench, or 1" wrench.
Great little tool, has removed many a bottom bracket. Held up to impact use on one stuck BB - lost some paint on the splines but doesn't seem to affect use. Good lifelong tool.