Rustlick™ 72055 EDM-500 Premium Synthetic Dielectric Oil for Electric Discharge Machining, 5 Gallon Pail A synthetic transparent fluorescent green EDM fluids/dielectric oil formulated using raw materials so highly refined and purified that additional additives are not necessary. EDM-500's cosmetic-grade chemical formulation virtually eliminates skin irritation during use. Resists thermal degradation from high-amperage applications up to 400 amps and offers the highest known dielectric strength of any commercially available EDM fluid.Features: