Purchased for a few thousand yen and used a few times. Park Tool RT-1 Bicycle Headset and Bottom Bracket Cup Remover The Park Tool RT-1 Headset and Bottom Bracket Cup Remover makes removing bicycle headsets and bottom bracket cups easy. Pull the tool through the frame until the flared end clicks behind the cup. Strike the end of the tool with a hammer or mallet, and the flared end will evenly distribute force around the cup as it is pushed out. Strong, heat-treated alloy steel construction with a nickel finish. Removes 1", 1⅛", and 1 1/4" headset cups For SHIS terms: Removes EC29, EC30, EC34, EC44, ZS41, and ZS44 headset cups Also removes some press-fit bottom bracket cups, such as SRAM DUB, Campagnolo Power Torque, and Campagnolo Ultra Torque. Nominal outer diameter of the shaft is 1 inch (25.4mm) For use with 27-38mm (1 inch - 1.5 inch) bearing races Thank you for looking.