1、COMPATIBLE MODELS: 3D printer hollow linear rail Compatible for VORON4, for Voron for Trident 3D printers, Perfectly Compatible. 2、HOLLOW DESIGN: MGN9H linear sliding rail guide adopts hollow design to make the rail lighter, support high speed printing, more stable performance. 3、PREVENT FALLING OFF: Two rubber plugs on each side of the linear rail guide prevent the slider from falling off, making it more secure to use. 4、HIGH ACCURACY: MGN9H linear rail guide is made of stainless steel with high accuracy, low wear and low noise, which is not easy to be damaged and has a longer service life. 5、APPLICATIONS: Linear rail guide kits are used in semiconductor manufacturing equipment, printed circuit boards, IC assembly equipment, medical equipment, robotic arms, accuracy measuring machines and other small linear motion devices. 1 Set x Linear Rail Guide Kit (2 Pieces) Item Type: Linear Rail Guide MGN9HMaterial: Stainless SteelCompatible Models: for VORON 2.4, for Voron for Trident