Made of high speed steel which makes them very efficient and resistant to wear. Features: quickly eliminates burrs from nylon, ABS and PLA without melting the filament. Wide range of applications, can be used for plastic cutting, internal and external burr removal, metal cutting, round hole cutting /> The blade can be replaced by a simple button. Quickly remove surface burrs, also make the item surface smooth. The handle can be loaded with a blade for easy carrying. Widely applicable for copper, plastic, metal, aluminum. Features: Type: Type 1: Burr Remover + 1 deburring blade Type 2: 10 deburring blades Type 3: Burr Remover +11 Deburring Blades Item Size: Type 1: 147 * 20mm Type 2: 47 * 3.2mm Package size: Type 1: 160 * 50 * 30mm Type 2: 80 * 60 * 40mm Type 3: 200 * 60 * 50 mm Package weight: Type 1: 26g Type 2: 38g Type 3: 64g