This shredder blade kit is designed for Vevor Model 300 plastic grinders and includes 9 rotating blades plus 2 fixed blades. Made from alloy steel with SKD-11 reinforced material, the blades offer high hardness, wear resistance, and impact resistance for demanding use. The sharp, burr-free blades help cut and crush a variety of plastics with efficient and even results. A stepped-edge design allows the blades to be reground for continued use and easier maintenance. It is suitable for processing ABS, PP, PVC, nylon, PS, PC, and fiber-reinforced plastics.