Antrader Double Head Sheet Nibbler Metal Cutter Hole Saw Drill Attachment Use for : Brass Aluminum Stainless; Overall Size: 18 x 5.1 x 7.8cm / 7" x 2" x 3" (L*W*H) Excellent cutting effect without any burrs and edges. Capable of cutting any kind of thin metal and sheets:Iron Sheet,Stainless Steel Sheet,Copper, Aluminum Sheet,Plastic/Fiberboard,etc. Cutting Diameter: 7.4mm / 0.3"; Shank Diameter: 27mm / 1.06" Material: Metal, Plastic; Package Content : 1 x Double Headed Cutter, 1 x Metal Wrench (2 types, we will send it at random) We are Antrader Direct and we just sell Antrader Product, please identify the goods quality and and be ware of other label.