1, Material: Color optical material 2, Specification: In accordance with drawings 3,Precision (the highest):N=2,N=0.5,B=40/20 Prism1), Material: Color optical material. 2), Specification: In accordance with the drawing, you can provide us your drawing, or you tell us the main parameters, then we will design the drawing and customize this prism for you.3), Precision (the highest): N=2 , N=0.5 , B= ...