Ball Bearings 3x8x2.5 Lot of 10 Bearings High Quality 10 bearings Wheel Ball Bearings for many applications, this is a popular size that could be used in many RC Cars and Trucks, or any application that uses this size 3mm x 8mm x 2.5mm. Bearings are made of Chrome Steel and can rotate up to 85000 rpm, Bearings are packed 10 bearings in one plastic tube.