Performance Tool Punch Flange Tool - M661 Part #: M661 Line: PFM Performance Tool Punch Flange Tool 1 Year Limited Warranty Type: Punch, Flange Length (in): 9-11/16 Inch Length (mm): 246mm Weight (Lbs): 3 Lbs. Air Inlet NPTF: 1/4 Inch Average Air Consumption (CFM): 4 cfm Minimum Hose Size (in): 3/8 Inch Minimum Hose Size (mm): 95mm Show More Show Less