ITEM NAME:20 pieces for bicycle wheels ball bearings made of carbon steel 1.02 cm 10 A7V6 20 pieces for bicycle wheels ball bearings made of carbon steel 1.02 cm 10 A7V6 Product Name: carbon steel bearing; Quantity: 20 pieces Material: carbon steel Diameter: 10 mm/1.02 cm Weight: 84 G The applications include wheels, conveyors, skates, bicycles, overhead cart, slide drawers, garage doors and door lock. Color: silver tone Package: 20 pcs carbon steel bearings Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..20 pcs carbon steel bearings. Material: carbon steel.