Praxis Works M30 Mtn BB30/PF30 BB- 73mm Axle to Crown Length-583.70000000000005 but will create a surface

but will create a surface with ridges (which some folks like for added grip)

Slides around tubing instead of over the top

The BOULDER from ECOVESSEL on Vimeo

Includes steel fixing bolt

Praxis Works M30 Mtn BB30/PF30 BB- 73mm Axle to Crown Length-583.70000000000005 but will create a surfacePraxis M30 crank spindle specific 30mm drive bearing 28mm non drive bearing For use with Zayante Carbon, Zayante Carbon S, Zayante alloy, Alba, Girder and Cadet cranks Made with Enduro bearings and high grade grease Praxis M30 BB tool required for installation for versions with external cups, use PX8980 8981 Unauthorized online sales prohibited by manufacturer Model M30 Mountain Spindle Interface Praxis M30 28 Shell BB30 PF30 Shell ID 42 46mm Width