Bought these to chuck on my Warwick $$NT. However, my knobs had issues with the longevity of the grub screws that lock in the knob onto the shaft. After installing them and leaving them on, some months later I decided to switch knobs and that's when I realised the grub screws had rusted and hence became extremely difficult to unscrew. I was fortunate to remove 3 knobs without rounding out the grub screws, but the last one was locked in because of the extensive rust on the grub screws. I ended up having to use brute force to pull of the inner metal shaft of the wooden knob with a pair of pliers. I guess that's what yiu pay for. They have the look, but just watch out if yiu intend to remove them, they could ruin your pot shaft if they rusted and froze. My stock Warwick knobs are 19 years old and simply do not rust. The stock knobs are all back on.