Linear Rail Kit, SFC25, 2Pcs 1000 Mm (39.4 Inch) Linear Motion Guide Rails And 4Pcs Bearing Slide Blocks, For DIY Engraving Machine Lathe Milling Machine Slides, DIY Training Rocker Plate

SFC25 Linear Rail Kit: Includes two 39.37 in (1000 mm) linear rails and four slide blocks. It is compatible with DIY engraving machine/lathe/milling machine slides, DIY training rocker plate, CNC machine tools and other fields

Rust & Corrosion Protection: Crafted from high-hardness carbon steel shafts (HRC58–62) and aluminum alloy blocks and supports. Each linear rail is coated with a more than 10 μm electroplated layer to resist rust and corrosion, even in humid basements

Silent & Smooth Sliding: Built-in ball-bearing slide blocks deliver quiet, low-friction motion while gripping the shaft tightly for stable linear travel. Less noise, less wear, more precision—every time you move

High Precision, No Deviation: Feature a 0.1–0.22 μm surface finish and 5 mΩ straightness, paired with precise hole diameter and spacing, this linear slide rail set ensures easy installation and repeatable positioning, even over long travel distances