New from Lenzip is its No. 12 marine-grade UV zipper. This new No. 12 gauge is available with 316 stainless steel sliders in auto lock single or double pull, as well as 316 stainless steel non-locking sliders. Standard metal sliders are also available. Tough, durable DuPont Delrin® UV resins make up the teeth and complements the UV stable tape. The zippers are made-to-order in any configuration and length, and are appropriate for the marine canvas, outdoor gear and temporary shelter markets.