Z synchronous wheel+belt The Z- is driven synchronously, rising synchronously, balancing the left and right Z-, making the accuracy of the X5SA3D printer's printing more accurate and making the Z- motor more powerful. Model Number: pulley+ belt Product specifications: 24-tooth synchronous wheelx2PCS and 1210mm belt Suitable for X5SA-400/X5SA -400PRO/X5SA-400-2E 3D PRINTER Belt Length: 1210mm Tooth: 24 Material:metal colour:Black, Silver Package Contents: 2 x 24-tooth synchronous wheel 1 x 1210mm belt Only the above package content, other products are not included. Note: Light 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.