| 摘要 |
The present invention comprises the guide plate, two guide pins and a knock plate with four connected blades. This tool is a precise, quick and dust free cutting device. It is used to remove the cut out for utility box in wall board installation. The guide pins are inserted into already installed utility box screw openings. When wall board is put into position, guide pins will pierce through board locating the utility box. The guide plate is then placed over pins to direct knock plate in the right position. The knock plate has metal blades that will cut through wall board, allowing easy location and cutting of wall board.
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