ITEM NAME:10Pcs/set SF-1 Bronze Bushing Bearing 10mm x 12mm x 20mm Bush Motor Sleeve C3R5 HOT SALE body .shopclass { float: left; width: 100%;.10x SF-1 Bearing Bushing. Low carbon steel Increase the carrying capacity of the bearing and heat transfer effects. With good load capacity and wear resistance pefermance. Material: low carbon steel+oil impregnated Bronze.