2PCS Linear Motion Rod, 25 mm x 1000 mm (0.98 x 39.4 in), SFC25 Carbon Steel Linear Rod Shaft, Anti Rust and High Precision, High Hardness Shaft, for Cutting Grinding Milling Drilling MachineProduct Features 2 Piece Linear Motion Rods This set includes two 25 mm diameter, 1000 mm long linear rail shafts. The high compatibility design pairs seamlessly with various linear rails and machinery, ensuring smooth and stable motion for industrial applications Hardened Carbon Steel Shaft Crafted from carbon steel with a hardness of HRC5862, the linear guide rail shaft delivers exceptional strength and resists bending under heavy duty use,