About this item High precision: Drilling depth observation and center alignment function make the drilling position and depth more accurate, and the operation is more convenient. Handle clamping plate --- There is no need to clamp vigorously, it has a fixing device. Drilling depth adjustable, adjust the distance between the limit ring and the drill sleeve to determine the depth of the hole Complete accessories --- The hinge hole locator has complete accessories. Kit includes 1 hinge hole opener, 1 drill bit, 2 hex keys. 35mm drill bit, fine CNC grinding, thick alloy knife blade Aluminum alloy material: The hinge hole opener is made of high quality aluminum alloy, which is sturdy and durable and has a long service life. The maximum plywood thickness is about 32mm. Application: The hinge opening is suitable for 35mm hinges, no need to measure. Facilitates the installation of the cabinet door