Jet Lube Kopr-Kote oilfield drill collar and tool joint compound is a premium-quality, unleaded compound containing copper flake, graphite and other natural extreme pressure and anti-wear additives. Kopr-Kote Oilfield's solid package is formulated to prevent excessive circumferential makeup by increasing the coefficient of friction under compressive forces. As stress levels rise above 50% of yield, the friction factor increases, limiting downhole makeup. Full hydraulic joint efficiency is maintained allowing joint shoulder faces to mate completely without standoff or deformation. For invert or high pH muds, use Jet Lube EXTREME. For wedge-type thread connections, use NCS-30 ECF for best thread-wear protection. The highly refined, low pour point oil used in the production of our grease ensures brush ability at low temperatures as well as the necessary oxidation and thermal stability at high temperatures. Aluminum based greases offer the additional advantage of superior adhesion to wet steel surfaces and resistance to water wash-off.