1、TECHNICAL PARAMETERS: This oblique hole drilling template has a hole angle of 15°, the suitable plate thickness is 0.47‑1.77 inches(12‑45mm), has clear metric scale markings. Adjust the nut to the desired depth and distance without additional measurements 2、EXCELLENT MATERIALS: This pocket dowel hole clamp device set is made of industrial grade aluminium alloy, which is both strong and lightweight. The anodized finish provide an excellent finish and corrosion resistance. The drill holes are inlaid with a steel sleeve to ensure accuracy and prevent wear during the drilling process. Accurate when drilling with long service life 3、EASY TO USE: Simply loosen the thumb screw to loosen the marked slider, simply adjust the drilling depth to the thickness of the sheet and then tighten the thumb screw again without using an additional wrench. Chip removal holes have been added for quick and smooth chip removal, saving you time 4、DIAGONAL DRILLING TEMPLATE: With 2 pieces(9.5mm/3.8inches) step drill bits for durability and long service life, you can freely drill holes in hardwood, softwood and MDF boards with a thickness of 12mm to 40mm. Accurate punching, no burrs 5、WIDE RANGE OF USES: Use a clamp to drill an oblique hole in the connection, then screw the self tapping screw(without the pilot hole) into the other part, tighten the dowel to conceal, and get a professional look. Quickly build cabinets, furniture and other types of carpentry, perfect for DIY projects or professional and general commercial use