17MM BEARING BEARINGS HUB SWINGARM AXLE ATV DIRT BIKE 17x40x12 6203RS

6203RS Ball Bearings, the inner diameter is 17 mm, outer diameter is 40 mm and the width is 12mm, this is a popular size that could be used in many applications, Bearings are made of Chrome Steel and can rotate up to 15000 rpm, each bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease