This craft knife set contains three handles: heavy duty, medium and standard use with 13 interchangeable assorted blades. This set is perfect for cutting a wide variety of materials including cardboard, fabric, leather and plastic. Each blade has a designated usage based on the cut of the blade. The chisel blade can chisel, shave wood, wax and soft plastic. The sharp angled blade is a straight edge that can cut cardboard, plastic, metal and leather. Angled chisel blade can chisel, cut, and trim paper, plastic and wood. Fine precision blade is a straight edge for precision cutting. The curved edge blade is for carving and cutting. The straight edge blade is for paper, wood and leather crafts. Stencil edge blade is for cutting stencils, plastic, wood and leather.Details:8.85" x 7.68" (22.4cm x 19.5cm) package size6 sets (16 pieces per set)Includes a case with a magnetic strip to keep extra blades storedCarbon steel, plastic and aluminumSet Contents:3 fine precision blade3 angled chisel blade2 chisel blade2 sharp angled blade1 curved edge blade1 straight edge blade1 stencil edge blade1 heavy duty knife handle1 medium use knife handle1 standard use knife handleWARNING: Blades are very sharp. Wear safety goggles.