6700ZZ Shielded Ball Bearings 10mm x 15mm x 4mm Lot of 10 Bearings 6700ZZ Shielded Ball Bearings, Bearings are made of Chrome Steel, this is a popular size that could be used in many RC Cars and Trucks, also bearings are pre-lubricated with grease, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, Bearings are packed 10 bearings in one plastic tube.