Massa 72mm Professional Infrared IR720 720nm Super Slim Filter Super Slim 5.5mm,No pressing ring design Create special effects with this infrared-Pass filter Multi-coating prevents light reflection, ghost light Optical Schott glass.Germany Tec.Coating Other sizes available52mm,55mm,58mm,62mm,67mm,72mm,77mm.Infrared Filter of 720nm/760nm/850nm/950nm for choise(See our Storefront)