The Aetna 49mm Close-Up Macro +1 +2 +3 Set Kit Lens Filter is a high-quality set of filters designed for close-up photography. Made by Vemar in Japan, these clear, circular filters come in sizes +1, +2, and +3, providing different magnifying effects for macro photography. The filters have a threaded mount fitting for easy attachment to cameras and film cameras, making them versatile for various photography setups. The kit also includes a carrying case for convenient storage and transportation.