Lot of 8 Shielded Extended Miniature Ball Bearings 1/4" inch x 22mm x 7mm 1/4" inch x 22mm x 7mm Deep Groove Radial Ball Bearings with extended inner race, bearings have Metal Shields, Bearings are made of Chrome Steel each bearings has 2 Metal Shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.