Rotabroach mini cutters are designed for use in standard drill chucks and deliver clean, burr-free holes with minimum power consumption, making them ideal for use with cordless machines. Sizes 6mm to 20mm are suitable for use in 3/8" or 1/2" drill chucks. Sizes 21mm and above are suitable for 1/2" drill chucks only. For information on the arbor & pilot drill assembly needed for your requirements, please see the attached PDF below. Complete kits are also available (RK604 and RK603) Features & Benefits • Rotabroach Mini Cutters cut clean, burr-free holes in seconds • The professional solution for cutting holes in sheet metal, pipes and plastics • Precision ground teeth and flutes ensure a fast, smooth and accurate cut every time • Over 3 times faster than standard twist drills making them highly economical • Low power consumption giving a long life to cordless drills Specifications • Diameter: 20mm • Cutting Depths: 6.4mm up to 20mm / 12.7mm over 20mm • Max. Tensile Strength: < 900N/mm²