Simplifies your work : Actuating sleeve recoils to indicate flush fastening. Increases your safety : Thanks to the strong ring magnet, even heavy screws are held securely in place. Product dimensions : 89 x 19 x 43 mm (LxWxD) Standards : for bits DIN 3126, ISO 1173, shape C6.3 DIN 3126, ISO 1173, Style E6,3