The Size 2 only fits 200 Newell series reels.
The Size 3 fits all the 300/400/500/600 Newell series reels. 
Our kits include the following:
Cortez Conversions Stainless Steel Clicker Button.
Cortez Conversions Stainless Steel Clicker Dog.
Penn Clicker Spring.
Stainless Steel mounting screw.
One white Teflon and one black Delrin washer (optional spacers if needed.)
 
These Clicker Kits are new, current manufacture, they are not OEM Newell or Valley Manufacturing products.
Cortez Conversions is not affiliated with Newell or Valley Manufacturing.