Park Tool Belt Drive Sprocket Remover BDT-1 Colour:NONE 4 mm square nipples (Shimano

4 mm square nipples (Shimano part # Y-012 Z4200) - found at the hub

It stands securely on the floor - with extra large foot pads and a giant easy-to-read gauge - and it pumps - with a long hose and locking head that's compatible with Presta

and color-coded for easy recognition

Strobe 98hrs

and lightweight

Park Tool Belt Drive Sprocket Remover BDT-1 Colour:NONE 4 mm square nipples (ShimanoThe BDT 1 solidly holds a rear belt drive sprocket (like a chain whip holds a chain drive cassette sprocket) so the nut or lockring can be removed. Made from heavy duty heat treated steel with a durable black phosphate finish, and vinyl dipped for comfort. BDT 1 Features Fits most major manufacturers' sprocket sizes