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As our best-seller, Sterlingcool-77 is a high-end premium cutting and grinding coolant for shops working multiple metals in a variety of operations. Sterlingcool-77 has been formulated to provide excellent lubricating, cooling, and corrosion inhibition properties in grinding and machining applications while also keeping machines running clean. It is recommended for a wide variety of metalworking operations including CNC milling, turning, drilling, boring, tapping, threading, and grinding. It is compatible with a wide range of materials including carbon steel, cast steel, high alloy steel, stainless steel, cast iron, aluminum, brass and titanium. Additionally, Sterlingcool-77 is formulated with unique lubricating properties providing excellent boundary lubrication making it perfectly suited for aerospace and automotive industries. Not only will Sterlingcool-77 machine most any application, it will provide a clean and comfortable working environment for a long time that will be safe and clean for machinists to work in. Sterlingcool-77 is extremely durable and resists bacteria keeping your coolant fresh and clean longer!