1、High Accuracy and Smooth Motion: The linear rail with roller bearings ensures high accuracy and smooth motion for various machinery installations. 2、Durable Material: Made of GCr15 C45 carbon steel, the linear rail is highly durable and can withstand extensive use in different environments. 3、Easy Installation: The steel supports make installation quick and easy, saving time and effort for machinery setup. 4、Wide Applicability: Suitable for engraving machines, woodworking machinery, printing machinery, and more, providing versatility for different applications. 5、Excellent Performance: With a high hardness and a roughness of not less than 0.8mm, this linear rail offers excellent performance and reliability. Item Type: Linear Rail Slide Material: GCr15 C45 Carbon Steel Hardness: HRC62 ± 2 Accuracy: g6 h6 Roughness: No less than 0.8mm, Rmax. Hard Tape: Approx. 0.8 ~ 3mm / 0.03 ~ 0.12in Grade Length: Approx. 100 ~ 3010mm / 3.94 ~ 118.5in, 6000mm available. Roundness: Not exceeding 3.0mm, Rmax. Straightness: 100mm, not exceeding 5mm Wide Application: Linear motion ball bearing set is widely used in the installation of various machinery such as carving machines, woodworking machinery, printing machinery, machinery, etc. 2 x Metal Rod 4 x Bearing 6 x Accessory