1、Fast Positioning: This hole saw has a drill locator guide for the holder for quick and tight clamping, allowing quick determination of the hole location. 2、High Accuracy: This woodworking punching positioner has adjustable limit design, precise limit, and precise match with 35mm hinge. 3、Hinge Hole Locator: The hinge punching positioner is made of plastic, with symmetrical holes, lightweight and portable, easy to operate. 4、Main Application: This hole opener is ideal for doorknobs, kitchen drawers, cabinets and other woodworker's hole opening jobs. 5、Easy to Use: Install the 35mm hole opener, adjust the drilling depth to 12-13mm under normal circumstances, and then lock the boundary ring.