Class 00 Electrical Insulating Rubber Gloves are made from red or black Type I natural rubber, blue Type II SALCOR, or contrasting blue/orange Type II SALCOR. The contrast between the outer orange color against the inner blue color makes inspecting for cuts and tears easier when the glove is inflated or stretched. Features & Benefits: ● Type I and Type II gloves are extremely flexible to make working with small parts easy. The gloves meet or exceed ASTM D120 and IEC EN60903 Standards.● R=red B=black Type I Natural Rubber, BL=blue BLO=blue in, orange out: Type II SALCOR