Duct Knife Blade Length 5 1/2 in Blade Material Stainless Steel Blade Type Straight Blade Width 1 9/16 in Blade Edge Type Serrated/Smooth Features Full Metal Tang Limited Lifetime Warranty Tether Ready Lanyard Hole Handle Material Polypropylene Knife Type Duct Knife Manufacturers Part Number for Replacement Blade Not Applicable Material Stainless Steel Material Application Aluminum Fiberglass Insulation Number of Cutting Edges 2 Overall Length 10 3/4 in Series Not Applicable