WonderPana Absolute Core for Various 14mm Full Frame Lenses (ie; Samyang, Rokinon, Vivitar, Bower, Pro-Optic, Bell & Howell) Premium Grade, Anodized Aluminum, WonderPana Absolute Mount for 130, 145 & 150 Filters Allows the Coking X-Pro (XL, 130mm), Fotodiox 145mm and Lee SW-150 Filters to be used on a variety of lenses The rear ring is compatible with the Lee SW-150 system filter holder The front discs are interchangeable for the Fotodiox 145mm or Coking X-Pro filter systems 24 Month Manufacturer Warranty