Mountain Bike Bottom Bracket Bb30 Threaded Aluminum Axle Sealed Crankshaft

aluminum and plastic; Threaded bottom axle--the increase in width also improves the overall rigidity of the frame, mountain bike bottom axle; Sealed bearing bottom axle--will not increase the resistance to the rotation bearing, and the is high, durable bottom axle; Aluminum axle-- and, with good water, integrated bottom axle; Bike supplies accessories--at the same time, the sealing resistance is reduced, and the appearance is higher-end, integrated bottom axle; Sealed bearing axle--interlocking design can reduce noise and rigidity, the is easy to maintain and lubricate, integrated bottom axle

What's in the box
1 x Bottom Brackets