RIDGID thread cutting oils are free of chlorine and other halogens, PCBs and heavy metals. Complete material safety data sheet available. Endura-Clear™ is specially formulated to maximize wear resistance which increases die life up to 60% and significantly cuts operating costs up to 30% over Nu-Clear. The formulation has been tested to assure chemical compatibility with FlowGuard Gold®, BlazeMaster®, and Corzan® pipe and fittings and has been added to the FBC™ System Compatible Program. Dark Oil ' Traditional mineral oil with low odor and anti-mist formulation. Nu-Clear® Oil ' Clear mineral oil with low odor and anti-mist formulation. Special low temperature properties maintain workable viscosity to -20°F. Extreme Peformance Oil ' High performance mineral oil formulated to produce superior quality threads on stainless steel and black pipe. FBC™ System Compatible indicates that this product has been submitted by the manufacturer and is monitored on an ongoing basis to assure its chemical compatibility with FlowGuard Gold®, BlazeMaster® and Corzan® pipe and fittings. The manufacture also agrees not to change the product after passing the test "FBC™. FlowGuard Gold®, BlazeMaster®, Corzan®, and FBC® are licensed trademarks of the Lubrizol Corporation. Features Cools threads and pipe during operation. Speeds metal removal. Improves thread quality. Reduces threading torque.