Professor Motor ABEC (Annular Bearing Engineering Committee) Grade 5 High Precision flanged bearings for 3/32" (2.38mm) axle for all chassis with 3/16" (4.8mm) chassis hole - 1 pair bearings

These bearing are chrome steel, single side fanged, double side shielded (to prevent ingestion of crude) with the high speed stainless steel ribbon retainer.

IMPORTANT TECH TIP : These bearings are manufactured to incredible tight tolerances but the axles you might be using ARE NOT ! SO ... to use the properly you will need to hand fit the axle you are using to the bearings for proper performance and reliability. BE SURE TO NEVER press fit an oversize axle into the bearing !! If you do that the bearing will be destroyed by the balls imbedding themselves into the bearing races.