Guhring Replaceable Drill Tip, Type RT 800, Series: 1047, 11/16 in Dia, 8 mm H x 4.5 mm W Insert, 140 deg Included Angle, 2 Cutting Edges, For Use With: RT 800 Drill, Right Hand Cutting, Through Coolant: No, Solid Carbide, TiN Coated, Applicable Materials: Aluminum, Cast Iron, Hardened Steel, Other Non-Ferrous Metals, Steel, Stainless Steel and Titanium Alloys