2 x 6 x 2 Shielded Ball Bearing One Bearing 2 x 6 x 2 Shielded Ball Bearing, The most popular application is for the Xmods Truck bearings 2x6, the Xmods Evolution truck takes 4 of these bearings, Bearing is made of Chrome Steel, each bearing has 2 Metal Shield to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.