1. The main body of the positioner is made of thick ABS material, precision manufacturing, accurate positioning, simple and practical operation. 2. This product is equipped with a quick clamp, no need for pliers, it can be clamped quickly and firmly, and the punching efficiency is high. 3. The ABS drill sleeve is detachable for easy installation and replacement of drill bits. 4.35mm alloy hole opener, edge, fast drilling, wear-resistant and . 5. Purpose: 35mm hinge opening installation, door hinge drilling positioning, woodworking opening aid tool Installation : 1. Mark the opening position of the board in advance 2. Install a 35mm hole opener, adjust the drilling depth of the drill bit (normally 12-13mm), then lock the limit ring and pass through the ABS drill sleeve. 3. Adjust the fixed size of the black pressing block of the quick clamp (note: the tool can adjust the size of the fixed wood board to 15-25mm), move the locator to the board marking and punching position, and lock the