10-Pack 5x8mm Shielded on Both Sides 5x8x2.5mm Ball 5mm Bore Diameter Bearings UCFL207 and width is 4mm

and width is 4mm

MR3121-2RS Full Complement Ceramic sealed Ball Bearing

SR6-2RS Sealed Ball Bearing is double sealed

inner diameter is 35mm

Bearing is made from Stainless Steel and has Solid Ceramic balls (SI3N4)

10-Pack 5x8mm Shielded on Both Sides 5x8x2.5mm Ball 5mm Bore Diameter Bearings UCFL207 and width is 4mm5 x 8 x 2. 5 Shielded Ball Bearings 10 Ball Bearings 5 x 8 x 2. 5 Shielded Ball Bearings, this is a go to bearing size that fits lots of RC cars and trucks or any application, 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 Bearings Deep Groove Ball Bearings