Description: Quality Material: This Centering Dowel Jig is made from quality aluminum alloy, which is wear resistant and sturdy, ensuring long term repeated use.Easy to Use: This Drill Guide Tool is user friendly. Simply adjust the screw, clamp the wood block, choose your desired drilling location and select the appropriate hole diameter size for easy drilling.Features: The 2 In 1 Drill Jig comes with clear scale and good support. It includes drill sleeves in sizes of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, and 10mm. The positioning can be replaced according to the drill hole size.Wide Application: This Punch Locator is nice for home use and suitable for various scenarios such as cabinets, drawers, cabinet doors, woodwork furniture, and home decoration.Practical Tool: This Drill Guide Bushings Set makes a practical tool accessory gift for both professionals and home users alike. Specification: Material:Aluminum Alloy Size Chart: 20cmx17cmx2.5cm/7.87inchx6.69inchx0.98inch Package Includes: 1 SetCentering Dowel Jig Note: Please allow slightly errors 1-2cm differences due to manual measurement.