GIESSER Universal knife wwp 11cm - -6 cols to choose Blade made of high quality chrome molybdenum steel Very sharp blade due to hand pull Smooth plastic grip Classic shape with straight blade back Wavy edge Wavy Edge The regularly grinded waves along the cutting edge allow the knife to slide through hard hides and crusts securely and without slipping.  The wave distance (from tip to tip) is 3 mm. Blade made from high grade chrome molybdenum steel, hardened to 56 Rockwell hardness grade (+/- 1 grade). The knives are dishwasher proof. However, we recommend manual cleaning to protect the cutting edge.