Mini POM Plastic Deep Groove Ball Bearings Replacements 3mm 4mm 5mm 6mm 8mm 9mm
Mini POM Plastic Deep Groove Ball Bearing ID 3mm 4mm 5mm 6mm 8mm 9mm Various Size. ●Structure: Deep Groove Ball Bearing (Open). ●High strength glass balls rotate more smoothly. ●Nylon cage, light weight, low resistance, not easy to break.