1. Insert Ball Bearing with Collar four-star, with the top wire ball 2.Material:Chrome Steel, 3.High ... quality&Fast Delivery Factory Insert Ball Bearing with Collar four-star, with the top wire ball Specification:1.Bore diameter: from ... Used in: Motorcycle, Motor, Pump, Fan, Air conditioner, Microwave Oven ,Sewing Machine, Massage Chairs, Agriculture Machinery, Fitness equipment, Washing Machine ...