鑽頭，縮徑柄（S&D），高速鋼，各別尺寸

Finally, someone sells these individually. The reduced shank is cut perfectly so it seats snug in my 1/2" chuck without any wobble.

Took forever to find individual sizes instead of a whole set, so grabbing just the 3/4" one was exactly what I needed. The reduced shank fit my 1/2" chuck without any wobble, and it cut through mild steel clean on the first pass.

Finally got through a 1/2" chuck job that used to stall my old setup, and these cut clean without any wobble. The reduced shank fits snug and the HSS edges stayed sharp through a full run of holes in mild steel.