APPLICABLE SCENARIO: Made of excellent synthetic board, excellent manufacturing bring accurate position and convenient operating. Concealed hinge jig allow you to drill cup shaped holes for concealed cabinet door hinges, ideal for drilling concealed hinges and locks SUITABLE CROWD: The drilling guide can be adjusted to tensify boards of different thicknesses, making it an excellent tool kit for furniture factories and woodworking enthusiasts. 35mm hinge opening installation, door hinge hole position, is a woodworking hole opening auxiliary tool EASY TO INSTALL AND USE: Install the 35mm hole opener, adjust the normal drilling depth to 12‑13MM, and then lock the limit ring. Easy to use any drill bit, no special tools required WITH ACCESSORIES: 35mm hinged drilling jig with 35mm fastener drill bit and depth stop; Easy to assemble and disassemble, very convenient APPLICABLE SCENARIO: Concealed door hinge jig is suitable for drilling machine, bench drill, vertical drill, handheld electric