Sdi 1361 - 30degree angle cut snap off cutter blades 9mm, high grade material for extra sharp edge, cutter blades are a much cost effective tool with greater output compared to any other cutting tool. Each blade is produced using sdi's precise multi-step production process for amazing sharpeness and superior edge retention for longer life. SDI 0443C Cutter Knife protects your hands with a AUTO Lock mechanism which prevents the blades from retracting. The stylish design of cutter makes it a useful tool in day to day professional cutting jobs. The high quality plastic & steel track ensures durability & maximum use of the cutter. Special 30Blade Cutter Knife.