The Praxis Works M30 THRU 68mm/73mm BSA Bottom Bracket BB86/BB92 is for installing the Praxis LYFT crank into 68/73mm BSA MTN frames. Also good for RaceFace/Easton “Cinch” cranks, Rotor Rex/3D+ cranks, and CaneCreek eeWings.Praxis Works M30 THRU 68mm/73mm BSA Bottom Bracket FeaturesM30 THRU BB’s are 30mm Drive bearing with a 30mm Non-Drive bearingMTB Guides-ISCG05 Good, ST Mounted Good, ISCG03 Not GoodPraxis Works M30 THRU 68mm/73mm BSA Bottom Bracket SpecificationsFor installing Praxis LYFT crank into BSA threaded framesAlso good for RaceFace/Easton “Cinch” , Rotor Rex/3D+ cranks, and CaneCreek68mm Road version / 68/73mm MTB setup30mm Drive bearing / 30mm NonDrive bearing | Steel cartridge bearingsForged & machined heat-treated AL CupsPraxis M30 BB tool required for installation – Sold separately