Detail [tiantianbaofu] 5pcs V U Groove Roller Wheel Ball Bearings Embroidery Machine Pulley Bearing Boutique
Features: These bearings are made from high quality carbon steel for durability and long service life. They are double shielded to avoid contaminants entering and save lubricant. These are specialized bearings that are used in many linear motion systems. Material: Carbon steel Size:as photos show Package includes:5Pcs/set