2PCS Bicycle Ball Crank Bearings 1/4 inch x 9 Balls 2 pcs Replacement Mountain Bike Parts Bicycle Crank Bottom Bracket Repair Parts

About this item Bicycle crank bearings are made of superior 304 stainless steel, featuring smooth balls, rust and wear resistant to ensure durability . Bearing OD: 28mm/1.14 inches, bearing ID: 18mm/0.71 inches, ball diameter: 6mm/0.24 inches. Measure the size before buying to make sure it fits your bike. This stainless steel ball bearing is securely mounted in the retainer and is a bicycle component designed specifically to replace crank bearings . Suitable for replacing bicycle crank bearings on a variety of bicycle types, including mountain bikes, low-speed bikes, etc. Package includes 2 pieces of bicycle wheel ball carrier bearings.