Features Smooth and Sturdy Performance: Provides precise and smooth linear motion for various applications, ensuring stable and reliable performance. Carbon Steel Material: Made of GCr15 45 carbon steel for enhanced durability and hardness, ensuring long lasting performance in demanding environments. Easy Installation: Comes with ball bearings, support mounts, and shaft rods, making it easy to install the linear rail and create a smooth sliding experience. Wide Application: This bearing kit is used for the installation of various machinery, such as engraving machine, woodworking machinery, printing machinery, etc. High Accuracy: Designed with g6 h6 accuracy and a roughness of 0.8mm, ensuring precise linear motion and high accuracy in locating and movement. Specification: Item Type: Linear Bearing Kit Material: GCr15 45 Carbon Steel Hardness: HRC62±2 Accuracy: g6 h6 Roughness: Not less than 0.8mm (Rmax) Hard Belt: 0.8mm-3mm Grade Length: 100mm-3010mm (6000mm is available) Roundness: Not more than 3.0mm (Rmax) Straightness: 100mm not more than 5mm Application: Widely used in the installation of various machinery, such as engraving machine, woodworking machinery, printing machinery, machinery and so on. Package List:2 x Metal Rods 4 x Bearings 6 x Accessories Package List 2 x Metal Rods 4 x Bearings 6 x Accessories