ABEC-5 Ball Bearings Stainless Steel With Flanged Lot of 10 Bearings 10 Flanged Bearing Stainless Steel Ball Bearings ABEC-5 quality, this is a popular size that could be used in many application that uses this size 1/8" x 1/4" x 7/64". Bearings are made of Stainless Steel and can rotate up to 100,000 rpm, .