Easy to Install: The hidden hinge clamp set is easy to install and use with any drill. Drilling precision can be achieved with any hand drill, no line drawings or other professional work is required. (Please refer to the video and instructions for detailed installation steps.)【PROFESSIONAL WOODWORKING TOOLS】Are made of high quality engineering plastics, durable and precise. The distance between these pivot holes is 46mm, 48mm or 52mm. It is suitable for drilling machines, handheld electric drills, bench drills, vertical drills, handheld electric drills, vertical electric drills and magnetic drills with movable band operation. The hexagon handle can be used with electric drills and drilling machines. 【HIGH PRECISION】This drilling jig allows you to drill hinge holes quickly and easily. The depth is limited between 15mm and 45mm. You can also remove stops with unlimited depth. Tip: A depth stop can be installed on the tool holder to avoid drilling too deep. 【WHAT YOU GET】You will get 1 x