Autek 1x Blades for Wishblade Silhouette Craft Robo Graphtec Cutting Plotter 45 Degree(CraftRobo-45) Material: Extra accuracy & high density tungsten cemented carbide 89-90%Wc / 10-11%Co, HRA 93, breaking strength: 4000-4200 N/mm Angle: 45 Diameter: 2mm Length: 36mm