Category：Prism Lens Set

Product specifications：
Included: 0.5 1 2 4 6 8 10 12 15 20 25 30 35 40 45 50 （16 Prisms）& Red Filter 
Square prismatic lenses in the Length 37mm and Width 37mm
Dimensions of package: 25.5cm * 14cm * 5.5cm
Weight: 640g