Shop grade tool for removal & installation of Shimano & ISIS Drive bottom bracket cups. Fits both 24 mm wrench & 1/2” socket for tool interface flexibility. * Shimano is a registered trademark of Shimano Inc. TOOL MATERIAL Cr Mo steel SIZE 5.3 x ø3.2 cm / 2.1” x ø1.3” WEIGHT 102 g / 3.59 oz