United States land laser focusing lens, two high-power diameter 38.1 focal length 7.5 United families and other United States two continental high power laser focusing mirror Diameter: 38.1mm focal length: 5 inches/7.5 inches For machine families United, 

leading, Luo Fen, Trumpf, Bystronic, imported is recommended. Thickness can be provided according to your needs, and prices slightly