The Nova 3 cassette lens system is specifically made for the Nova 3 helmet.
Sold as a case of 20 cassettes.
Each cassette lens system consist of 5 of the outer most tear off lenses sealed to one outer lens for your Nova 3 blast helmet. Each cassette lens has individually pre-folded tabs ensuring that workers tear off only one lens at a time.
So easy, you can keep your blast gloves on while tearing away the lens.