Duct Knife, Blade Material Steel, Blade Shape Straight, Blade Type Serrated, Cutting Action Blind Cut, Cutting Length 6 in, Depth of Cut 6 in, Blade Edge Type Serrated, Features Ergonomic Cushion Grip Features One Serrated Cutting Edge and Comes With a Puncture-Resistant Nylon Sheath, Grip Material Rubber, Handle Color Black, Handle Material Rubber, Handle Style Ergonomic, Knife Type Duct Knife, Material Nylon, Steel, Material Application Fiberglass Wool Duct and Duct Board.