For Shimano® / ISIS Drive® compatible cartridge BBs with 20-tooth in the ring. Use with 1/2" air driver (#53R4) or ratchet wrench. CNC engineeredICETOOLZ 11B1 SHIMANO/ ISIS DRIVE BB TOOLSKU: 11B1₹790.00PriceQuantity*Out of StockNotify When AvailableSPECIFICATIONS․ Product Dimensions : 5.1 x 3.2 x 3.2cm ․ Weight : 0.130kg ․ Color : Black ․ Material : Cr-Mo Steel