V623ZZ V Groove Bearing Pulley 20pcs 3x12x4mm Linear Motion Rail Track

1 These bearings are made from high quality carbon steel for durability and long service life 2 They are double shielded to avoid contaminants entering and save lubricant 3 Bearings have 1.4mm deep V groove that generally ride on a rail or track 4 These are dedicated bearings that are used in many linear motion systems 5 There comes total 20 pieces bearings which you may use for many different projects

What's in the box
20 x V Groove Bearing