Attach the Nibbler to your cordless or electric drill to make it a power sheet metal cutter. Fits key or keyless chucks 5/16in. or greater capacity. Makes straight or curved cuts leaving a clean, burr-free edge. Easily cuts up to 18 gauge steel or aluminum. Perfect for removing rusty or damaged panels. Cutting edge is tool steel, and replaceable. Nibbler has no-slip 1/4in. hex drive. Instructions included. Made in England.