100% Raw Brass Knurled Dome Knobs 1/4" internal hole will also fit 6mm pots like CTS Bourns and CGE. Harken back to the days of yore when raw brass was used by Charvel and Schecter Hollywood and Boogie Bodies. We were fortunate enough to have a special run of these done. We also carry the raw brass strap buttons just look in our store. Unplated just as nature intended & will tarnish nicely. Sold in sets of 2 for a low low price. Don't pay killer prices for 1 knob get 2 for less!