I bought this split-shot to use on the Salmon River, Pulaski, NY. It would not stay in place on the line. Kept sliding up and down, even if I put the line at an angle or crimped the shot with a pliers. I bought #4 size and tried to use it on 10, 14, and 17 pound test line, without success. I switched to Water Gremlin shot and had no issues with their product.
The picture of this item shows a nice-deep cut in the weight. Mine were about 1/3 of that depth. My line barely nestled in them. I pinched them shut with as much force as I could and they still slipped on the line. One cast and they were best friends with my bait.