3/8 2 flute , HSS Square Single End, Center Cut, 3/8 Shank, 2-1/2 LOC x 4-1/4 OAL

This is a 3/8 inch, 2 flute, HSS square single end, center cut drill bit with a 3/8 inch shank, 2-1/2 inches long overall, and 4-1/4 inches overall length.