Park Tool Head Cup Remover For 1-1/4" And 1-1/2"Information: The RT 2 Head Cup Remover makes headset cup removal easy. The tool is pulled through the frame until the flared ends snap in behind the cup. A blow on the tool head removes the cup. Features: Designed for the 1 1 4" and 1 1 2" headset standards Also easily removes cups on one piece cranks Strong, heat treated alloy steel with a nickel finish Nominal O. D. of shaft is 25mm For use on 3855mm (1 1 2" 2 3 16") bearing races