FOTGA 58mm Lens Filter Adapter Ring for Cokin P Series Square Filter 58 mm Suitable for 58mm lens and Cokin P series,made of metal How to use: Screw the ring adapter onto your lens Slide the filter holder on the ring adapter until it snap in place Slide the filter into one of the filter holder slots Package including: 1* 58mm lens adapter ring (Filter and holder are not included)