13 casters for 3D printer

Features - Color: Assorted colors. Material: Plastic. Dimensions: 2.40 x 2.40 x 1.10 cm. - This plastic ball bearing is a round passive pulley for 3D printers. - This pulley is widely used for wheel alignment, cable and belt routing. - These bearings are equipped with motor-grade ball bearings, rust and wear resistant, offering excellent friction resistance and smooth operation. - Their fine workmanship and original design ensure their popularity and practicality.