M24 24mm DRIVE | 22mm NON-DRIVE CAN BE USED WITH... STEEL SPINDLE : PRAXIS M24 CRANKS | SRAM "GxP" CRANKS | OVAL M24 CRANKS CHECK YOUR FRAME HERE M24-BSA THREADED 68mm ROAD | 68/73mm MTN M24-PF41 BB86 ROAD | BB90/92 MTN M24-BB30/PF30 68mm ROAD M24-BB30/PF30 73mm MTN