10-30pcs 684ZZ Ball Bearing 4x9x4mm Double Shielded 684-2Z Deep Groove Bearings
Size: 684ZZ (Inner Dia. =4mm, Outer Dia. =9mm, Thickness=4mm). 10-30 PCS x Bearings. Shields on BOTH SIDES of the bearing to keep dust out. Suitable for high speed operation. Made from Carbon Steel, durability and resistance to under heavy loads.