spade drill extension as a tap extension

[Frank S]

if you have ever had to tap a thread in a hole that was difficult to get to you might appreciate this
I needed to tap some holes in a member that was 10 inches deep inside of a structure. Fortunately they were 1/4-20 so my spade drill extension worked perfectly. the square of the tap fit in the 1/4" bore and was secured in place by the grub screws the chuck end had 3 flats which allowed me to tighten this into my T handle