Polaroid 72mm Adapter Ring works for Polaroid & Cokin P Series Filter Holders
Precision designed using high quality aluminum materials, this adapter is designed to slip into the Polaroid P filter series filter holders. Check for the filter size of your lens, there should be a symbol of a circle with a line through it (diameter) with a # next to it. If this # says 72 then you need a 72mm adapter ring.