This tool is designed to work with a minimum 12VDC cordless or maximum 7 amp AC corded impact driver. No setup or adjustment is required, with quick-release 1/4" hexchuck. It is faster than using a manual sheet metal crimping tool, provides high working efficiency, and saves time and labor. Suitable for crimping multiple sizes, types, and thicknesses of round metal ductwork (including spiral duct and metal stovepipe). Compact in size, easily stored in a bag or pouch when not in use. Features: It is a simple and compact accessory that uses only the power of impact technology to safely and efficiently crimp the galvanized round tubing and black stovepipe. It requires no setup or adjustment. Simply attach the 1/4" power drive shaft to your cordless or corded impact driver (min. 12 VDC / max. 7 amp AC) to immediately begin crimping multiple sizes, types, and thicknesses of pipes and ducts, including spiral duct, quickly and easily. With the pipeseam or tubeseam in the closed position, starts the crimping process on one side of the seam by gently pulling on the driver trigger and angling the crimper impact onto the metal edges. Move the crimper in a controlled manner around the circumference of the tube, then angle the crimper away from the metal as the crimper approaches the other side of the welded seam. Comfortable for operator to maneuver, and is a must-have accessory for every HVAC installer, it is easily stored in a ready-to-use tool pouch or bag when not in use. Specifications: Name: Pipes Crimper Material: steel Color: black+silver Item size: 80 * 50 * 110mm / 3.15 * 1.97 * 4.33in Package size: 210 * 152 * 51mm / 8.27 * 5.98 * 2.01in Package weight: 960g / 2.12lb Packing List: 1 * Pipes Crimper