Also forgot I have 20+ of one for the techno/sp-250 fx wheel that looks like the sp-250's Radium (dots, bumps or bubbles) I've RTV'ed blue colorizers to the bottom of the fx wheel and put these on top and makes a great water effect. and yes I do have a few of the colorizers they're 37 or 37.5mm so like I said they rtv glue to the bottom nice.
Also forgot I have 20+ of one for the techno/sp-250 fx wheel that looks like the sp-250's Radium (dots, bumps or bubbles) I've RTV'ed blue colorizers to the bottom of the fx wheel and put these on top and makes a great water effect. and yes I do have a few of the colorizers they're 37 or 37.5mm so like I said they rtv glue to the bottom nice.