Sheet Metal 5 Blade Crimper- Create a seamless connection for use on any ductwork, gutter, downspout, and sheet metal pipe installation. A must have for any HVAC tool belt. Use for 28 gauge sheet metal up to 26 gauge stainless or 24 galvanized steel applications. TIGHTER FITTING CRIMP DESIGN: Long shallow double crimp creates a leak proof connection with a simple grip of the hand for secure ductwork assembly DURABLE CONSTRUCTION: Hardened steel constructed handle with non-slip ergonomic grip provides comfortable handling and long-lasting performance VERSATILE GAUGE COMPATIBILITY: Used for crimping heavy or thin metal sheet 22-28 gauge galvanized or stainless steel for various applications DEEP THROAT DESIGN: Allows for variations in crimp depth to make secure connections in ductwork sheetmetal, downspout, gutter round duct and stove pipe COMPOUND-LEVERAGE MECHANISM: The compound-leverage clamp creates a mechanical advantage to reduce hand fatigue during extended use