The pail & drum wrench is designed to loosen and tighten the caps found on standard (70 mm wide) 5 gallon foam pails and both the large and small bungs on 55 gallon drums. The 4578 is made from incredibly tough, glass-filled nylon, comes in high visibility colors and is spark and corrosion proof. The 4578 Wrench is 10 inches (254 mm) long and weighs just 6.5 ounces (185g).