General description Professional Set of 20 pieces HSS milling cutters designed for woodworking and various crafting needs. This set includes 20 different shapes and sizes of rotary cutters, allowing you to select the appropriate cutter head based on your specific work requirements. Technical specifications Material: High-speed steel Features: High hardness, wear resistance, heat resistance Quantity: 20 different grinding bits Compatibility and accessories Compatible with Dremel electric rotary tools Works with most mini grinders Usage Suitable for engraving, chamfering, grooving, reaming, punching, and more Can work on soft metals such as plastic, ceilings, drywall, laminate, fiberglass, vinyl, and aluminum Ideal for DIY enthusiasts, jewelers, designers, and more