These are the cones we use in all our tricone models
We are making our proprietary cones available for repairs or replacements. These are not off the shelf generic cones, they are made to our specifications. That being said, resonator cones sizes are quite standardized and these should work in just about any modern or vintage instrument. You can buy a set of three or just one.
• Cones are approximately 5 13/16″ in diameter. This is pretty standard for both vintage and modern resonators
• Fits all Royall tricone models as well as most other brands on the market