Heres the technical side of things for Dura Coat . Performance: Conical Mandrel Passes 1/8” mandrel. Direct impact resistance 100 in. lb. Reverse impact resistance 80 in. lb. Salt Spray test 300 hrs. Pencil hardness H to 2H. Characteristics: Volume solids 21.0 to 32.5 +/- 1%. Film thickness can be varied from .25 to 1.5 mils dry. Laymans Terms :) Chemical Resistant – Protects your weapon from harsh environments, most lubricants and oils, solvents, and other potentially harmful chemicals.