1、LOW NOISE AND WEAR RESISTANCE: Linear guide is made of 304 stainless steel, linear bearing is made of steel, more durable, low noise. Low friction coefficient and high trajectory accuracy 2、WIDE APPLICATION: Linear motion kit is suitable for industrial automation equipment, stepper motor guide rail, such as 3D printers, engraving machine, XYZ module, slide block, elevator 3、STRONG AND RUSTPROOF: Linear motion products have high tensile strength, higher hardness than ordinary materials in the market, corrosion resistant, acid resistant, rustproof 4、WIDELY USED: Linear motion set is very suitable for your DIY router, milling machine, lathe, widely used in automation machinery, also suitable for automation equipment, accurate measuring equipment 5、COMPLETE SET: Linear motion kit include rod shaft guide, screw, support, bearing, couplings, complete accessories to form a perfect system