Park tool bottom bracket tool bbt22the bbt 22 is a shop quality tool for installing and removing shimano and isis drive splined 20 tooth bottom bracket cups made from investment cast steel the bbt 22 utilizes a flat tooth profile to ensure maximum engagement with the bottom bracket cup can be used with a 38 drive torque wrench 38 ratchet driver 32mm wrench frw 1 freewheel remover wrench or 1 wrench featuresthe bbt 22 replaced the bbt 2 and will fit all bottom brackets serviced by