TH-M WINDSHIELD FASTENER (PAIR) WSH-1PR-DP (Image for Reference) Makes Installing and Removing the Windshield Simple Base Mounts to the Boat and the Quick Twist Fastener Passes Thru Windshield Great for Preventing Broken Windshields in Shipping, Installation and for Cleaning Molded of UV stable polymer that will not corrode Two male configurations: wing nut style, slotted flush head