Maritime and high humidity environments require specialized equipment. Heat treated 4140 high carbon steel is plated with Electroless nickel to provide the ultimate corrosion resistance. Patented foam vinyl grip for increased retention.ASP expandable batons offer significant advantages over other intermediate force weapons:- Easily carried and readily at hand- Unparalleled psychological deterrence- Low profile, improved public image- Easily Maintained- No sharp edges to abrade clothing or cut assailant- Better balance than traditional impact weapons