Features: There are two cutter heads, adjustable for head cutting. Ergonomic design handle for comfort,easy to operate and labor-saving. Double cutting for head and 360 degree adjustable, cutting in any direction and angle desired. Excellent cutting effect without any burrs and edges. Suitable for car repair and maintenance and metal sheet productions. Optional 8mm electric or pneumatic drill, rotating speed 1500-3000 rpm. The minimum cutting radius is 12mm. Allowable cutting thickness. Specifications: Material:Metal+Plastic Wrench Size: Approx.11.6cm/4.56inch Nibbler Cutter Size:Approx.18cm/7.08inch Color:Silver/Orange/Red Cutting capacity: Ordinary iron plate: 1.8mm Stainless steel plate: 1.5mm Copper, aluminum plate: 2mm Plastic plywood: 2mm Speed: 1500-3000rpm/min Minimum cutting radius: 12mm It is important to add oil frequently at the cutting edge of the cutter for head, especially when cutting aluminum plates. Turn on the electric drill first, then cut, and when it is finished, first exit and then turn off the electric drill. When cutting, the incision of the cutter bar must be kept perpendicular to the workpiece to be cut to prevent the cutter for head from being broken. Blade replacement: Open the protective cover, take out the lock nut, loosen the set screw, pull out the blade with pliers, reinstall the blade, and tighten the screw. Tool holder replacement: unscrew the compression cap counterclockwise and replace it with a new tool holder. Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Wrench 1x Nibbler Cutter