ZoMei 77MM IR 680+720+760+850+950 Glass Infrared X-Ray Filter 5 Piece Zomei 5pcs kit ultra slim design infrared filter ,real bargin for professional photography optical glass with alloy frame ,durable ,each piece packed a display color box with origin label these filters fit for digtal camera or slr camera which lens thread is 77mm ideal for wide angle lens ,screw it on the front camera lens Double threaded frame to allow additional filters or hoods.