6707ZZ Shielded Ball Bearing 35mm x 44mm x 5mm 6707ZZ Shielded Ball Bearing, Bearing inner diameter is 35mm, Bearing outer diameter is 44mm and Bearing width is 5mm, 6707ZZ bearings is a popular size that could be used in many RC Cars and Trucks, Bearings is made of Chrome Steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.