Reduced shank drill, also called a Silver & Deming drill, has a reduced straight shank that is smaller than the diameter of the cutting bit. The smaller shank allows for the use of a 1/2" drill chuck while cutting larger holes.

This 11/16" drill is 6" in length and has a 1/2" shank. The drill is made of high speed steel (HSS).

The cutting tip is 118 degrees and the drill has a black oxide coating.