Screw Drill and Countersinking Tool, Drill Bit Size 3/16 in, For Screw 10

A countersinking, tapered drill bit to provide superior speed and finish to all projects. Adjustable depth is obtained by changing the distance from the drill bit tip to the countersinking cutters. This depth is secured by tightening a hex nut with the enclosed Allen wrench.Replacement taper point drill bits are available (see suggested products).