Yamaha Snowmobile Bearings 20mm x 42mm x 12mm Lot of 10 Bearings 10 Ball Bearings 6004-2RS (6004RS) for use with Yamaha Snowmobiles, the inner diameter is 20mm, outer diameter is 42mm and the width is 12mm, Bearings are made of Chrome Steel, each bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease, Bearings are packed 10 bearings in one plastic tube.