PRODUCT INFO
The Milwaukee 49-00-5424 is a 5-pack of M12 HACKZALL Duct Blades — specialty blades for the Milwaukee M12 HACKZALL compact reciprocating saw specifically engineered for cutting HVAC sheet metal ductwork, duct board, flex duct, and the mixed metal and insulation materials in duct system installation, modification, and service work. HVAC ductwork cutting presents unique blade challenges — rectangular ductwork sections require starting cuts from the middle of a sheet metal face without the edge access that standard reciprocating cuts use, flexible duct systems combine mylar or wire-reinforced outer layers with insulation batting and inner liner layers that each require different blade action for clean cuts, and the thin-gauge galvanized steel of rectangular duct bends and flexes away from standard blades in ways that require specific tooth geometry to cut cleanly without tearing and deforming the metal at the cut edge.
- Specialty duct blade for sheet metal ductwork and mixed HVAC duct materials
- Purpose-designed for M12 HACKZALL stroke and motor — optimized for compact saw
- One-handed HACKZALL ideal for duct work requiring free hand to support material
- 5-pack for HVAC contractors with regular duct cutting and modification workload
- Compatible exclusively with Milwaukee M12 HACKZALL reciprocating saw
