- 11 total robust S blades plus an additional 10-pack of razor-sharp high-speed BS1010 HRCC64 replacement steel blades. If you need more than these 11 blades, you can purchase a single BS1010 replacement blade pack. - For a wide range of materials: brass, steel, aluminium, copper, and plastic pipe deburring. Also effective for cleaning and finishing metal edges on car parts, gears, and other freshly cut metal components. Also suitable as a 3D printer accessory for trimming the edges of 3D printed plastic objects. - Deburring blades made of extremely durable high-speed steel (HSS): hardened, sharp, sturdy, and wear-resistant. HSS is typically about 80 percent more durable than normal steel, which helps maintain performance over time. - High quality and comfort: ergonomic aluminium handle for a secure grip, plus high-quality components. Includes a safe box for storing additional blades. Built to last, making 3D printing, DIY projects, and related tasks easier.