Different specifications allow you to choose the right one according to your needs. Professional and exquisite workmanship makes it very resistant to corrosion and wear. The scaled feature makes it very convenient compatible you to use. And the simple and convenient installation will not waste your time. Made of aluminum alloy material, it is very durable to use. There are five specifications compatible you to choose from: 100mm, 200mm, 300mm, 400mm, 500mm. It is suitable compatible table saw, band saw, router table, workbench and other DIY projects. Item Name: Woodworking Sliding Slot Material: Aluminum Alloy Color: Red Screw Hole Specifications: M9, M5.2 Product Scale: with Scale (Laser Engraving) Features: Easy to Install, Wear-Resistant, Different Specifications Product Specifications: 100mm, 200mm, 300mm, 400mm, 500mm Number of Screw Holes: 1 x M9 + 1 x M5.2, 2 x M9 + 1 x M5.2, 1 x M9 + 2 x M5.2, 2 x M9 + 2 x M5.2, 2 x M9 + 2 x M5. 2 Size Details: 100mm: 10cm x 4.5cm x 1.3cm/3.94" x 1.77" x 0.51" (Approx.) 200mm: 20cm x 4.5cm x 1.3cm/7.87" x 1.77" x 0.51" (Approx.) 300mm: 30cm x 4.5cm x 1.3cm/11.81" x 1.77" x 0.51" (Approx.) 400mm: 40cm x 4.5cm x 1.3cm/15.75" x 1.77" x 0.51" (Approx.) 500mm: 50cm x 4.5cm x 1.3cm/19.69" x 1.77" x 0.51" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Woodworking Sliding Slot