The EDMA DIMPLER magnetic holder is designed for quick and easy screwdriving of screws into plasterboard or chipboard. The holder turns your ordinary drill into a professional tightener. Thanks to the strong magnet , it holds the screw in the optimal position during screwing. The shape of the holder automatically countersinks the screw to the correct depth, preventing the screw head from pulling off and tearing the plasterboard paper. The holder has a replaceable bit. It also allows reverse operation.