Bosch forstner bits bore perfectly smooth, flat-bottomed holes in wood. Holes are precise, flat and splinter-free even in end grain and knots. Ideal for drilling decorative holes used in fine woodworking and especially well-suited for severe angles and overlapping holes. These forstner bits are fashioned from a chrome steel alloy with a 3/8-Inch shank and are suitable for precision drilling with portable drills or stationary machines.