10wt Lead Line Cast Net Sinker Mold

https://www.cncmolds.com/webstore/lead-casting-molds/weights-lead-line-for-nets/10-weight-/-lead-line-/-net-sinker.html

These are called a "Ten Weight" net weight because 10 of them will make up one pound (+/-). If you use pure lead and get perfect pours it will be a little over a pound, but pretty close. If you use unknown lead alloys or get less than perfect pours it a count of ten may come in a little under one pound.

Nominal size is:

3/8 inch (0.375) in diameter.
3 inches in length.
3/16 inch (.1875) pass through hole. (pins included)
4 cavities in a mold.
10 castings per pound.