FOR INTERNAL AND EXTERNAL DEBURRING OF HARD AND SOFT MATERIALS. COMFORTABLE AND PRACTICAL EQUIPPED WITH CLIPS TO ALWAYS CARRY THEM WITH YOU AND HAVE THEM AVAILABLE AT THE RIGHT TIME. WITH ERGONOMIC HANDLE AND DIFFERENT COLORS TO IMMEDIATELY IDENTIFY THE RIGHT DEBURRER FOR THE RIGHT MATERIAL: PURPLE FOR ALUMINUM, RED FOR BRASS AND CAST IRON, BLUE FOR STEEL AND YELLOW FOR PLASTIC