10-Pack 3x6 Sealed 3x6x2.5 Miniature 3mm Bore Bearing3 x 6 x 2. 5 Sealed Ball Bearings Lot of 10 Bearings 3 x 6 x 2. 5 Sealed Ball Bearings, measures an inner diameter of 3mm, outer diameter is 6mm and the width is 2. 5mm, each bearing has 2 Rubber Sealed to protect the bearing from dust or any possible contamination, additionally, these bearings come pre lubricated with grease for smooth operation. 3 x 6 x 2. 5 Ball Bearings Deep Groove Ball Bearings Size: 3mm x 6mm x 2. 5mm Bearing Inner Diameter: 3mm