Ball Bearings 3x6x2.5 Chrome Steel Lot of 10 Bearings 10 Ball Bearings, this is a popular size that could be used in many fishing reels, or any application that uses this size 3mm x 6mm x 2.5mm. Bearings are made of Chrome Steel and can rotate up to 80,000 rpm, Bearings are packed 10 bearings in one plastic tube