The Wheels Manufacturing Pro BB bearing press is ergonomic and easy to use. It features two aluminum handles connected by a 1/2" threaded rod and utilizes 2 machined aluminum drifts that press in various sized bearings. The drifts are stepped for use with bearings that feature an inner diameter ranging from 22mm to 46mm. Features: Professional, shop-quality, tool with large handles and brass inserts in the handle faces Easy to use, results in true and smooth press-fit bottom bracket installations Brass inserts allow the handles to turn freely against the drifts Includes 2 alloy handles, a 1/2" threaded rod, and 2 universal bottom bracket drifts Each drift is machined with multiple steps to fit all common bottom bracket shells and bearing diameters Made in the USA BB Compatibility: -BB30 (42mm) -PF30 (46mm) -BB86, BB92 (41mm) -BBRight (46mm) -BB386EVO (46mm) -Cannondale BB30A (42mm) -Cannondale PF30A (46mm) -Specialized Carbon OSBB (46mm) -Specialized Alloy OSBB (42mm) -TREK BB90, BB95 (37mm) -PF24 (41mm)