Superior Pneumatic's rugged lock seam tools closes Pittsburgh lock seams quickly. Our durable air hammers are made in the USA with either a straight handle (Models 261, 361, or 44755) or a pistol grip handle (Models 260, 360, 240476). All steel and aluminum construction, heat-treated for longer life ... no plastic parts. Weighs only 2-3/4 to 5-1/2 pounds, light weight for bench or overhead work. Superior Pneumatic & Manufacturing Company, Inc. P.O. Box 40420, Cleveland, OH 44140: 800-521-2282:Fax 440-871-5127: www.superiorpneumatic.com. If you are looking for a duct hammer, tin knocker or sheet metal lockseam tool check out web site.