1 [ACCURATE SIZE] The set contains 10 pcs linear ball bearings for use, with inner diameter of 12mm, outer diameter of 21mm and height of 30mm. 2 [HIGH STRENGTH] These linear motion ball bearings are made from alloy steel, with high tensile strength and hardness. 3 [LASTING LIFE] Alloy steel linear motion bushings are resistant to damp, corrosion, acid and rust, ensuring lasting use. 4 [LOW FRICTION] The linear bearings have smoothly surface, low noise, low friction coefficient and high track accuracy. 5 [WIDE USAGE] Cylinder linear bearings are suitable for industrial automation equipment, such as 3D printer, engraving machine, XYZ module, etc.
What's in the box
10 x Linear Ball Bearing
