10 pcs Deep Groove Ball Bearing, 4 18 8 Deep Groove Ball For

WIDE USE: Ball Bearings Suitable for motors, toys, models, power tools, communication equipment, instruments and meters, gymnastic equipment and other fields

V-GROOVE: The bearing has a V-groove which is generally mounted on a guide rail.Stable operation, small error, low noise and fast speed. Chromium Steel long-life bearings, smooth and low noise

SEALED DESIGN: The bearing is well sealed, waterproof and dustproof, safe to use.Deep groove ball bearings, modern, flexible sliding, compression wear

SEAL: V-groove Track Roller Bearing keeps grease in, prevents impurities from entering and extends bearing life. Precise size, smooth and low noise operation, multi-functional use in multiple scenes

SIZE: SMALL BALL BEARINGS: Inner diameter: 4mm; Outer diameter: 18mm; Thickness: 8mm.Packing list: 10 * V groove ball bearings. Z2 Noise Level for most general use