... .Highlight:1 Support multi-touch,4 points, 16 points, 32 points and 256 points2 All-metal case, high strength structure design 3 ... Fully compatible with windows XP OS, windows 7/8 OS multi-touch system Specification: Available Sizes: 27",42", 55", 65" or ... by 3M tapes and overlay straps.Application: Infrared 64 points multi-touch 42" touch screen touch frame