Wera 2090 Impact driver 90 Nm, 5/16" x 142 mmHigh quality impact driver that can loosen rigid connections without the use of power tools simply by the force of the impact. The Wera impact drivers have a particularly high efficiency thanks to their robust, double curved design. Impact forces are converted into rotary motion. The use of compressed air equipment becomes unnecessary. For M 4 to M 8 screws. Drive: 5 16" hexagon socket. Features 2090 impact driver, 90 Nm To loosen and tighten screws