Additional technical information: Design according to DIN 3110, ISO 3318, ISO 1085, ISO10102 Flat-headed Anti-glare, matte surface Maul: precisely on exact nominal polished for optimal contact surfaces Grip by slim profile shaft Overload is displayed by deformation High-grade industrial quality for tough continuous stress ; DIN standard: DIN 3110; Product size (length): 157 mm; Size (spanners): 3/8", 7/16"