Description: 【Quality Aluminum Alloy Construction】: Made from quality aluminum alloy with surface oxidation treatment, this tool is built for durability and wear resistance while being easy to handle during use 【Versatile Drill Guide Sleeves】: Equipped with drill guide sleeves in sizes 6/8/10mm, this tool accommodates different dowel sizes for diverse applications in your woodworking tasks 【Self Centering Precision】: This woodworking tool set features a self centering drill guide, ensuring accurate alignment and stability while drilling, making it an essential addition to any woodworker's toolkit 【Adjustable Height for Accuracy】: The adjustable feet allow you to modify the height according to the board's thickness, enhancing drilling accuracy and providing versatility for various woodworking projects 【Wide Application Range】: Designed to fit boards of varying thicknesses, the two claw system allows quick positioning of the hole center with ease. The dust removal groove design ensures a clean working environment Specification: Material: Aluminum Alloy Jig: 7cmx5.7cmx3.6cm/2.76inchx2.24inchx1.42inch Drill Guide Sleeve: 0.6cm/0.24inch, 0.8cm/0.31inch, 1cm/0.39inch   Package Includes: 1 Self Centering Dowel Jig 3 Sizes Drill Bushings Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.