🔨 Crimp like a pro, feel the flow! All steel construction with nickel-plating for longevity. Crimps multiple gauges with ease. Self-opening latch for seamless one-handed use. Trusted by HVAC pros for superior performance. Factory-precision indentations for flawless results. 5 blades for versatility 24g steel & 28g stainless Ergonomic comfort grip The Klein Tools 86520 5 Blade Crimper is a high-performance tool designed for HVAC professionals, featuring a compound-leverage mechanism for precise indentations in various ductwork materials. With its durable all-steel construction and ergonomic grips, this crimper ensures comfort and longevity, making it an essential addition to any toolkit.