This sheet metal crimping attachment is designed to work with a minimum 12 volt DC cordless or maximum 7 amp AC corded IMPACT DRIVER. No set up or adjustment is needed. Immediately begin crimping multiple sizes, types, and thicknesses of round metal duct (Including spiral duct and metal stove pipe). It’s also easy to balance while using and stores comfortably in a pouch or bag when not in use.

Attention Use Impact Driver Only! Minimum 12V DC Impact Driver With Quick Release 1/4 in. Hex Chuck.