Usage Tips:5 Blade Pipe Crimping Machine: Made of precision alloy steel, the sheet metal crimping machine is suitable for crimping heavy or thin metal sheets into 24-28 gauge galvanized or stainless steel piping systems; simply squeezes to create a perfect fit between furnace tubes and Produces factory-accurate indentations on round ducts; duct crimping tool has a maximum cutting force of 0.16 in/4 mm Our hand crimper HVAC tool material handle features a non-slip grip for comfort and easy control, the Gutter Tool Metal Downspout Crimp includes an integrated lanyard lanyard hole for working at height; spring loaded lever mechanism reduces long Overexertion and hand cramps during time use Downspout crimper material: The head of the crimper is made of A3 plate, and the handle is made of 45# steel plate to enable it to withstand harsh working conditions. Unique one-hand operation latch: This gutter crimping tool features an integrated safety lock, keeping your sheet metal tool crimper compact, easy to store, and your crimp head protected from damage Versatile Furnace Pipe Crimper: Our HVAC duct crimper 5-blade design works on ductwork sheet metal, downspouts, gutters, metal pipes, gutter round pipes, furnace pipes and anywhere you want to crimp Makes a good connection; deep throat allows for variation in crimp depth, allowing you to quickly and accurately crimp sheet metal tubing however you wish Colour:Black & Red Material:45 # steel Size:About 26.5cm Package Contents: 1 * Metal Crimper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.