<ul><li>Description:</li><li>This kind of ball bearing stainless steel ball inlaid in the retainer design.</li><li>Can be a ideal replacement for the bicycle or racing bicycle or mountain bike.</li><li>Before purchasing, please confirm whether the size of the accessories of your bike is matched with this product.</li><li>Package Include: 4 or 12 pcs x Bicycle Ball Bearings</li></ul> Description: This kind of ball bearing stainless steel ball inlaid in the retainer design. Can be a ideal replacement for the bicycle or racing bicycle or mountain bike. Before purchasing, please confirm whether the size of the accessories of your bike is matched with this product. Package Include: 4 or 12 pcs x Bicycle Ball Bearings

KOVNOVI Bicycle Headset Steel 7 9 15 20 22 Balls Bike Axle Wheel Ball Frame Bearing Caged Retainer Replacement Accessories (Color : 4pcs 18.8mm)