4-point contact design provides multi-direction load capacity with high rigidity and accuracy. The slider moves smoothly for reliable use. Premier Linear Guiding System: main axis rail and aluminum alloy carriage form a stable, durable guide. The standard block uses an industrial-grade, high-precision bearing inside. Wide application: commonly used in automation equipment and DIY projects such as routers, lathes, milling machines, bending machines, welding fixtures, and related setups. Easy installation: align the rail with the carriage interface and slide until seated. No maintenance required. Material and performance: aluminum alloy carriage; robust bearings; designed for smooth, precise motion and long service life. Use scenarios: - DIY CNC router or milling machine upgrade for improved axis movement - Small automation stations in DIY or workshop setups (robotic feeds, transfer lines) - Precision bending or welding fixtures requiring stable linear guidance