15x21x4 NMB Bearing 6702ZZ
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 zero contact metal shields.
Application- 1/8 off road. 1/10 off road wheel hubs. Any scale on road.