Sandvik Coromant internal and external turning with positive basic-shape insert. CoroTurn 107 is the first choice for external and internal machining of small, long and slender components. Sharp cutting edges and excellent chip control ensure a soft cutting action and low cutting forces, giving an outstanding surface finish to the component. Geometries designed for high pressure coolant is now available for stainless steel and HRSA materials. Low cutting forces. Excellent edge strength, outstanding chip control, screw clamping ensures stability and unobstructed chip flow.