10pcs MR85ZZ Double Shielded Miniature Ball Bearings, 5x8x2.5mm Micro Bearing Metal for 3D Printer, Model Making

[ Materials] :These miniature bearings are made of bearing steel for low noise and long service life . [Double shielded Miniature Ball Bearings] :They are double shielded to avoid contaminants entering and save lubricant . [Size] :Bearings have a 5mm / 0 . 19inch inner diameter ,a 8mm / 0 . 31inch outer diameter ,and a 2 . 5mm / 0 . 09inch thickness . [Application Scenarios] :These are great for small hobby 5mm shaft/rod projects such as 3D printer ,quadcopter or ship model . [Quantity] :There comes total 10 pieces miniature bearings which you may use for many different projects .