Ball Bearings 10x19x5 Lot of 10 Bearings 10 bearings Ball Bearings for many applications, this is a popular size that could be used in many RC Vigor helicopters, RC Cars and Trucks, or any application that uses this size 10mm x 19mm x 5mm, these bearings are made of Chrome Steel and can rotate up to 37000 rpm, each bearing has 2 metal shields 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.