HANDLES 24–30 GAUGE SHEET METAL WITH EASE: Engineered for common HVAC materials, providing clean, consistent bends across a range of sheet metal thicknesses.
TWO FOLDING DEPTHS IN ONE TOOL: 3/8" AND 1": The 12F features dual folding grooves: a 3/8-inch channel for drive cleat locks and shallow bends, and a 1-inch channel for deeper folds like joist panning, plenums, and register boot flanges. Switch between depths instantly. No tool swap, no setup time.
BUILT-IN SIGHT HOLES FOR ACCURATE DEPTH ALIGNMENT EVERY TIME: Precision sight holes along the tool let you visually confirm your sheet metal is seated at the correct depth before folding eliminating guesswork and reducing rework on every bend. Consistent depth alignment means professional results whether you're a seasoned tinner or working sheet metal for the first time.
PERMANENTLY JOINED TWO-STEEL HALF CONSTRUCTION FOR LASTING RIGIDITY: Delivering a rigid, wobble-free tool that holds its shape under repeated bending force, the 12F's seams are formed from two steel halves, permanently joined together. Handles up to 24-gauge sheet metal without flexing or deforming, job after job.
MADE IN USA AND TRUSTED TRADE PROS: Tinners, HVAC installers, and roofing contractors have relied on Malco folding tools for decades of daily use. The 12F weighs in at 20 oz. and is also available in 18-inch (18F) and 24-inch (24F) for extra-wide stock.
Folding seams are formed from two steel halves, permanently joined together
Creates 3/8-Inch and 1-Inch fold depths in ductwork
Handy sight holes assure proper depth alignment

Malco 12F 12" Folding Tool, 3/8" & 1" Depths, 24–30 Gauge Capacity, Sheet Metal HVAC Tool for Drive Cleats, Ductwork, Plenums & Joist Panning, Made in USA