Acc. to DIN 894, ISO 3318, Manganese phosphate finish up to 38 mm, steel-grey up from 41 mm, Size 10 - 135 mm with anging hole, Carefully forged and professionally machined: Jaw: ground precisely to exact nominal size for optimum contact areas, Jaw set at 15B0, Secure grip thanks to profile shaft - very ergonomic and handy, Overloading indicated by deformation, *not standardised