Hello, I am still digging through the machinist box. From what I have learned, the former owner was either a pattern maker, or worked in the pattern maker shop at Crouse Hinds. These are a mystery, aluminum & brass, and the rods look like they would have been used as a setting tool. Most are about 5/16" in diameter, and about 5/16" high, each with 6 hairline slots on the flat area.There are quite a few different sizes in the brass. He could have been saving these for scrap, but there is no weight here, he would have had to collect 1000's!! Thanks, Lou
