Estwing T3-18 18 Oz Tinner's Hammer Estwing's Tinner's Hammers have a bonded and molded Shock Reduction Grip. The head and handles are forged in one piece and fully polished. These tools have unsurpassed balance and temper. Made in the USA using the finest American tool steel. Malco DK6S Double-Sided Smooth and Serrated Duct Knife Duct Knife, Cutting Length 6 In., Overall Length 10 In., Handle Design Ergonomic Rubberized Cushioned Grip, Handle Color Black, Material Stainless Steel Blade, Features Resharpenable Double-Edge Blade has One Side Serrated and One Side Knife Edge, Blade Pierces Outer Skin, Insulation And Liner Of Flexible Round Fiberglass Wool Duct, Cuts In Either Direction, Includes Punture Resistant Nylon Sheath For cutting flexible fiberglass wool duct and duct board. Double edge blades are ideal for blind cuts in flex duct. Ergonomic cushion grip features one serrated cutting edge and comes with a puncture-resistant nylon sheath.