Features: High-quality aluminum alloy material, with nice durability, wear and corrosion resistance, not easy to rust. Splicing type guide rail, you can set the route according to your needs, smooth movement, high accuracy and nice stability. The surface of guide rail with scale, clear and easy to read, bring more convenience to work, with strong practicality. Easy to install and disassemble, perfect for woodworking trimming, grooving, engraving, hole cutting, etc. The tool set includes 4 * guide rails, 4 * slides, 4 * gaskets, 4 * screws and 1 * wrench. Specifications: Model: Type 1 (600mm Guide Rail Kit) / Type 2 (500mm Guide Rail Kit) / Type 3 (400mm Guide Rail Kit) / Type 4(Pair of G-Clamps)(optional) Material: Aluminum Alloy Rail Length: 600mm / 500mm / 400mm(optional) Clamp Clamping Ranges: 1-86mm G-Clamp Size: 156 * 22 * 29.5mm Package Size: Type 1: 630 * 90 * 60mm/ 24.8 * 3.5 * 2.4in Type 2: 530 * 90 * 60mm/ 20.9 * 3.5 * 2.4in Type 3: 430 * 90 * 60mm/ 16.9 * 3.5 * 2.4in Type 4: 180 * 100 * 30mm/ 7.1 * 3.9 * 1.2in Package Weight: Type 1: 3100g/ 6.8lb Type 2: 2600g/ 5.7lb Type 3: 2100g/ 4.6lb Type 4: 320g/ 0.7lb Packing List: 4 * Guide Rail 4 * Slides 4 * Gasket 4 * Screws 1 * Wrench