Parallelism: 0.01/200 mm Clamping surface faces: finely milled or smoothed Hardness: unhardened Material: case-hardened steel Alignment hole and centre hole: with hardened bushes in accordance with DIN 179 with base surface Base surface : with hole pattern according to table or drawing, suitable for machine table in accordance with DIN 55201 Contour: cut using an oxyacetylene flame/sawn