10pcs Double Shielded Ball Bearings 3x8x4mm 693ZZ Miniature for Printer, Quadcopter and Ship Model

HIGH QUALITY-- These miniature bearings are made of high quality bearing steel for long lifespan; it features low noise and quick movement. MINIATURE SIZE-- Ball bearings have a 3mm inner diameter, a 8mm outer diameter, and a 4mm thickness. These mini bearings are perfect for Accuracy work and applications that require a lot of functional mechanical parts in a small space. DOUBLE SHIELDED DESIGN-- The bearings have double shielded design which can prevent contaminants and dust entering, save lubricant. 10PCS-- The package includes total 10 pieces miniature bearings which meets your different requirements, they are good replacements for your old ones. APPLICATION-- Miniature bearings are great for small hobby 3mm shaft/rod projects such as printer, quadcopter, ship model and more.