Winstrip® Gardener KitsWinstrip Nursery Trays or Seed Starting Plug Trays Mix Kits for Home Gardeners Kit A Contains Six Winstrip Nursery Trays Two of Each 50, 72, and 128 kit B Contains Seven Winstrip Nursery Trays Three 50 Two of each 72 and 128 And Seven Solid Indestructible Bottom Trays Kit Combinations Cannot be Changed. Air Prune Nursery Trays have been trusted by growers around the world for decades. They are simply the best, longest lasting trays made, and they are