Ball Bearings 10x19x5 Lot of 10 Bearings 10 bearings 61800 Ball Bearings for many applications, this is a popular size that could be used in many application that uses this size 10mm x 19mm x 5mm. Bearings are made of Chrome Steel and can rotate up to 41000 rpm, Bearings are packed 10 bearings in one plastic tube.