1. The product is made of sheet metal technology and black sandblasted oxidation, not easy to scratch, beautiful appearance! Matched with high-quality brass screw nuts. 2. It is exactly the same size as the original NDER-3, -3V2, -3 Pro machine sheet metal parts. 3. This sheet metal part is used to upgrade the machine's dual Z axis or replace the original sheet metal. 4. Applicable: Dual Z-axis printer upgrade, fit to NDER-3, -3V2, -3 Pro. Color: black, silver Material: metal Package Contents: 1 x fixed plate 1 x belt 1 x adjustment block 2 x screw holders 2 x screw rods (about 380mm long) 1 accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.