1/8 inch Slot Car Axle Flanged Stainless Steel ABEC-7 Ball Bearings with Solid Ceramic balls & Bakelite Retainer 2 Pairs (4 Bearings) 1/8" Flanged SLot Car Axle Bearings. These Bearings are the same like the one used in dentists handpiece. The quality is ABEC-7, you will get 2 Pairs (4 bearings) 1/8 Inch Axle Slot Car Flanged Ball Bearings, size is 1/8" x 1/4", Bearings are made of Stainless Steel and has Solid Ceramic balls. The retainer is made of a material called "Bakelite" , each bearing has one metal shield to protect the bearing from dust or any possible contamination, bearings are pre-lubricated with oil.