Huge lot of about 90 early electric vintage unglazed porcelain tube insulators. Many of these are marked Brunt and the rest seem to be unmarked.
These tube insulators were used for old knot and tube style wiring to allow the early rubber and cloth insulated electrical wiring to be passed through rafters and wall studs. They range from about 3" to 4 1/4" in length and about 1/2" in diameter.
Some of these have broken or chipped ends.