15x21x4 Rubber Sealed NMB Bearing 6702-2RS
NMB- Quality that can only be found with the NMB name. These bearings are a great choice as an option between steel bearings and pricey ceramic bearings. These bearings feature Polished stainless steel balls, “TW” Type nylon ball retainer, Grease filled, Abec 5 rating, and low friction rubber seals.
Application- 1/8 off road. 1/10 off road wheel hubs. Any scale on road.