Punch-Flange Tool, Manufacturer suggested retail price. $101.78 Features and Benefits: Blade designed for easy replacement Ball bearing construction with a forward exhaust system Dual function tool performs hole punching and panel crimping Features a rotating head for convenient use Every pull of the lever delivers a single punch or a single flange crimp with precision control Forms an offset crimped edge on sheet metals for no-bump lap welds Lightweight, yet ruggedly built Cuts metal fabrication time in half Manufacturer: Astro Pneumatic 1 yr warranty on material and workmanship