The Wheels Manufacturing PF30 Threaded ABEC-3 Bottom Bracket for 30mm Cranks is designed for cyclists seeking a reliable and smooth ride. This bottom bracket features outboard bearings, making it compatible with M30 28/30mm spindle Praxis cranksets. The two machined aluminium cups thread together, ensuring stability within the frame, enhancing bearing life, and simplifying maintenance. Say goodbye to creaking and enjoy smoother operation with longer-lasting bearings. Crafted with a USA machined aluminium shell, this bottom bracket offers superior function and durability. Its threaded design allows for easy installation and removal, making maintenance a breeze. Features: Bearings: Enduro ABEC-3 Bottom Bracket/Frame Interface: PF30, Specialized Carbon OSBB* Bottom Bracket Shell Width (mm): 61mm* to 83mm Bottom Bracket Shell I.D: 46mm Crank Spindle Diameter: 28/30mm Tool Pattern: 48.5mm x 16 notch Over Bearing Width: 89mm in 68mm wide shell Weight: 151g The Wheels Manufacturing PF30 Threaded ABEC-3 Bottom Bracket for 30mm Cranks is a practical choice for those who value easy maintenance and a quiet, efficient ride.