Key Features Medium duty aluminium knife with a twist lock shatter resistant safety cap Five extra blades include: two #24 blades, one #2 blade, one #19 blade, one #22 blade. Perfect for precision cutting, trimming, and stripping of paper, foamcore plastic, wood, cloth, and film. Includes 4 jaw aluminum chuck for more secure blade positioning and hold than your standard medium duty knife Light weight body fits with all standard craft knife blades including Xacto Knife blades. Made in the USA