Blades is Tungsten steel. throughout the grinding polishing processing. immoderate precision, good lettering quality. Higher hardness, larger strength, tip extra , cutting plotter lettering faster. Good put on resistance,no burr, not easy to rust Angle: forty five degree(Red) Fit for: Graphtec CB09 and Graphtec Type: Slab Milling Colour:silver + purple Material:Tungsten metal Package Contents: seventy five x carving knife seventy five x spring plastic Only the above equipment content, varied merchandise are not included. Note: Light and diverse exhibits may cause the colour of the article in the picture a little bit diversified from the genuine thing. The measurement allowed error is +/- 1-3cm.