This alloy steel shredder blade kit is designed for the Vevor Model 180 plastic grinder and includes 9 rotating blades plus 2 fixed blades. Built from high-hardness SKD-11 material with a 50-55 HRC surface hardness, it is made for durable, wear-resistant performance in demanding plastic processing tasks. The sharp, burr-free blades help deliver efficient cutting and consistent crushing results. Its stepped-edge design supports re-grinding for repeated use and easier maintenance. Suitable materials include ABS, PP, PVC, nylon, PS, PC, and fiber-reinforced plastics.