10-Pack 5x8x2.5mm Shielded Miniature Bearing5mm x 8mm x 2. 5mm Shielded Ball Bearings Lot of 10 Bearings 5mm Inner Diameter 10 Bearings Wheel Shielded Ball Bearings for many applications, this is a go to bearing size that fits lots of RC cars and trucks, Made from high strength chrome steel for durability and performance, each Comes with double metal shields (ZZ) to keep out dust and dirt, additionally, these bearings come pre lubricated with grease for smooth operation. 5 x 8 x 2. 5 Ball