Reference:
The following information is from:
This type of tool was evidently discontinued before catalogue No. 59 was published in 1959.
"Made from Three-fourths inch Quarter Octagon Granite Drill Steel." (per catalogue No. 36)
"We can also furnish promply Drills with 3/4" Bit made from 7/8" steel. Prices on application." (per catalogue No. 36)
Catalogue listings:
Plug
Drills. Shank with flat edges. Size of Bit: 5/8." Weight each:
2.1lbs. Price: $1.00 (per catalogues No. 36, 37)
Plug
Drills. Round Shank to fit Pneumatic Plug Driller. Price: $1.30 (per
catalogues No. 36, 37)
The prices listed above are for historical purposes only; listed items are not being offered for sale.