【Adjustable Drilling Depth】Adjustable drilling depth, adjust the distance between the limit ring and the drill guide to determine the depth of the hole. 【4-Speed Adjustable Edge Distance】4-Speed adjustable edge distance from the plate, the hinge drilling jig comes with a wrench to loosen the screw to be adjusted. 【Designed for 35mm hinges】This concealed hinge jig kit Designed for 35mm hinges, no need to measure, makes cabinet door installation easier. 【Quick Locating and Fixing】No need for strong clamps, the 35mm concealed hinge jig hole opener has its own fixing device, quick locating and fixing. 【Package Included】1 x Hinge Positioner, 1 x Allen Socket, 2 x Adjusting Wrench. Instructions for Use: 1. Draw a reference line. Referring to Depending on the height of the cabinet door and the number of hinges installed, choose a suitable position to draw the center line of the hole. 2. Align the reference line. Align the tip of the product with the reference line and fix it with the handle