Fasnap Stainless Steel Buttons Sockets, Marine Grade Top Quality 50 of Each Piece - Sufficient to Complete 50 Female Portions of the Snap Assembly Cap Post is 3/16" Line 24 When purchasing snaps online be sure to look for the Fasnap Brand or DOT Brand name stamped into the socket. This will assure you are purchasing a quality product. Anything else may corrode, pull apart easily or break. Top Quality Fasnap BrandStainless Steel Snap Fasteners, Marine Grade, Recommended for Salt Water Environments Heavy-duty construction assures a firm grip that will remain secure through years of use All Stainless Parts, superior snap action and holding strength We Ship Internationally! Northwest Tarp Canvas Take a Look Our Quality Tarps! Have a Nice Day!