Just the knob. It's a drop in replacement, pull the stock knob assembly out of the bottom of the handle insert the 1 piece brass knob. Adds some well needed weight and improves the balance of the Progress IMO. I can also make the knob out of aluminum and that weighs about the same as the stock knob.
Could you make these out of stainless? Looks nice but would look even nicer in stainless IMO. cheers Pete
Stainless is harder to work with, though there are some like 416 that claim to be easy to machine. Also not as readily available, would have to be order on line while brass is available locally. Buffed stainless isn't a perfect match to chrome plating. I might consider making knobs out of stainless if the demand was there. People on these sites will say they'll buy it if you make it, then when you've spent the time and money producing product they're no where to be seen