DREMEL® 561 Spiral Cutting Bits Multipurpose (D=3.2mm) (3 No/Pack) BRAND NEW DREMEL 561 Spiral Cutting Bits Multipurpose (3 No/Pack) (26150561JA) Working Diameter = 3.2 mm For 'free' cutting in softer materials like soft wood, drywall and plastics Best for cutting and drilling in soft materials such as soft woods (less than 12mm thick) and plastics. Great to go freehand to create the shapes you like. Technical specifications Shank diameter - 3.2 mm Working diameter - 3.2 mm Working length - 30 mm Accessory length - 65.0 mm Width - 3.0 mm Maximum RPM - 35.000 1/min Length - 3.0 mm Height - 62.0 mm Pack Quantity - 3 10% reduction to cost will be accepted on purchases of 5 or more packs. CHEAPEST ON EBAY!!!!!!