Features: The support pull rod kit for the aluminum profile structure 3D printer. It is used to improve the stability of Z axis and enhance the printing effect. Compatible with Ender-3 / Ender-3S / Ender-3 Pro or other similar 3D printer structure with printing size of 220 x 220 x 250mm. The length of a single tie rod is 39cm, convenient to install, and the structure is more stable. Made of high quality aluminum alloy material, durable and sturdy. Package Includes: 1Set x Supporting Pull Rod Specifications: Item: Support Rod Set Material: Aluminum Alloy Packing Size: approx. 39x2.6x2.6cm/15.35x1.02x1.02in Suitable for: Compatible with Ender-3 / Ender-3S / Ender-3 Pro note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2mm measuring deviation due to manual measurement.