Material: Zinc alloy, flanged bearing ensures strength, wear resistance and durability. Plumen Bearing Set: Housing bearings are available in 2 different inside diameters,10 mm and 20mm. They may be perfect for your needs. Please make sure the size you need is correct before purchasing. Easy to install: Two-hole body with ball bearing insert for ready-to-assemble installation, it also guarantees quality . Adjustable: Lock ring adjustment screw for secure attachment to the driven shaft. Between the inner bearing and the angle of the outer ring, the angle can be precisely adjusted, which provides smooth, low-friction and hard operation. Application: Suitable for aerospace, industrial automation, compressors, machinery, printing machinery, etc. This bearing block can facilitate the maintenance and replacement of 3D printer parts.