Specification Brand : uxcell BulletPoint1 : Package Included - 2pcs x Linear Motion Shaft Rods; Outer Diameter: 8mm/0.315inches Length: 330mm/13 inches Material: C45# carbon steel; Color: Silver Tone; Rigidity: 53-62 HRC;Ra0.35m BulletPoint2 : Quality Material - Made of C45 carbon steel, surface chromium plating, high hardness, rust-resistant and corrosion-resistant, sturdy and durable. The surface is smooth, without cracks, and even with no bubbles. BulletPoint3 : High Accuracy - Precise motion control with our Linear Motion Shaft. The diameter measures 8mm, with a tolerance range of -0.005mm to -0.03mm (7.995mm - 7.97mm). This tight tolerance ensures accurate and consistent movement. The 330mm length has a tolerance of ±0.5mm (329.5mm - 330.5mm), allowing for precise positioning and alignment. BulletPoint4 : Easy To Use - The chamfer on both ends of our linear motion shaft serves a dual purpose. Makes it easier to install linear bearings but also ensures that fingers are safe. Designed as a round steel shaft with linear support blocks and closed-type slide units. This design allows for easy integration into high-speed, low-noise, and high-precision equipment. BulletPoint5 : Wide Application - Widely applied in CNC machine, 3D printer, automatic machine, molding machine, engraving machine, etc. Color : 150 lbs. ExternallyAssignedProductIdentifier : 10785028263824 ExternallyAssignedProductIdentifier1 : 750253922740 ExternallyAssignedProductIdentifier2 : 0750253922740 ExternallyAssignedProductIdentifier3 : 00707152657402 IncludedComponents : Linear Actuator ItemName : uxcell 2PCS Linear Motion Rod Shaft Guide 8mm x 330mm (0.315 x 13 inches) for 3D Printer and CNC Machine, Metric H8 Tolerance, Rigidity 53-62 HRC,Ra0.35m ItemPackageDimensions_Height : 34.9 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 8.9 centimeters ItemPackageQuantity : 2 ItemTypeKeyword : linear-motion-guides Manufacturer : uxcell Material : Carbon Steel ModelNumber : RRDZT40N-100MM NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : a23091900ux0368 ProductDescription : Advantage: Made of C45 carbon steel, surface chromium plating, high hardness, rust-resistant and corrosion-resistant, sturdy and durable. The chamfer on both ends of our linear motion shaft serves a dual purpose. Makes it easier to install linear bearings but also ensures that fingers safe. Taking the role as round steel shaft with linear support blocks and closed-type slide units. Designed for high speed, low noise, and high precision equipment. Widely applied in CNC machine, 3D printer, automatic machine, molding machine, engraving machine, etc.