Descriptions: Made of rubber material, durable and stretchy. There are 2 pcs synchronous belts(X axis and Y axis) to meet your different needs. Great components allow the efficient operation of the 3D printer. Open timing band is suitable for accuracy mechanical transmission. Designed for Creality Ender-3 3D printer. Specifications: Material: Ruber Length: about 765 mm(X Axis)/720 mm(Y Axis) Color: Black Quantity: 2 Pcs Package Included: 1 Pc x X Axis Synchronous Belt 1 Pc x Y Axis Synchronous Belt Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow slight deviation for the measurement data and make sure you do not mind before ordering.