Zund part number 3910309, it's made from tungsten carbide powder, Z11 blades is a flat-stock drag blades with a very small overcut, have a cutting angle of 60° and a maximum cutting depth of 6.9 mm, The length of Z11 blades is 50mm, the width is 8mm, and the thickness is 1.5mm, the cutting edge bevel degree is 41°, degree of finish Ra 0.2.