I used these on the solderless P-bass wiring harness, also from Obsidianwire. These knobs are solid, heavy, and have a positive feel. Fit to the potentiometer shaft is perfect. Paired with the Obsidianwire harness, I could not be more pleased. There is some resistance in the feel, but not too much, and the substantial knobs exude quality, giving a well-built and sturdy feel.