Replaceable tip drills by Guhring are available in 1xD, 1.5xD, 3xD, 5xD, 7xD, and 10xD coolant fed holder styles, in diameters ranging from 11.0 mm to 25.5 mm. Three different thru hole carbide insert designs allows end users to effectively drill aluminum, cast iron, steel, stainless steel and aerospace materials fast and accurately.