1. Stainless steel lead screw + brass nut, rustproof and long service life.<br> 2. Smooth moving, low friction, high rigidity and long working life.<br> 3. 3D engraving machine lead screw 200mm length with nut.<br> 4. Applies to: Widely used in 3D Printer, stepper motor, machine tools, and other equipment.<br> Color: Silver + Gold + Grey<br> Specification:<br> Screw Material: Stainless Steel<br> Nut Material: Brass<br> Diameter: 8mm/0.31in<br> Nut Diameter: 22mm/0.86in<br> Length:200mm/7.87in<br> Lead: 2mm/0.078in (nut revolution movement 2mm)<br> Type: Vertical<br> Lead Screw's Lead: 2mm<br> Pillow Flange Inner diameter: approx. 8mm/0.32 inch<br> Pillow Flange Outer diameter: approx. 27mm/1.1 inch<br> Pillow Flange Length: approx. 48mm/1.9 inch<br> Pillow Flange Height: approx. 12mm/0.48 inch<br> Weight: 228g<br> Package Include:<br> 1* lead screw<br> 1* nut<br> 1* flexible coupling<br> 2* bearing block mounting bearings<br> Only the above package content, other products are not included.<br> Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.