Manual Hand Seamers Sheet Metal Tools: Use as a sheet metal duct bender for HVAC projects Precision Seamer: Casting jaws are marked in 1/4 inch bending increments Comfortable and Safe Design: Non-Slip Pitted handle for maximum power and comfortable operating range; Safety lock and hanging hole for easy carrying and storage Build to Last: Heavy duty all steel construction with nickel plated finish for durability Ideal for Construction Projects: Folds 18-gauge Galvanized, 30-gauge Cold-rolled steel and 30-gauge stainless steel; No heavy power tools required for bending, stitching, and flattening; Tips: Please always wear gloves when you're working HURRICANE Sheet Metal Hand Seamer, 6 Inch Straight Jaw Sheet Metal Bender Tools for Flattening Metal, Double Dipped Cushion Handle