We love Vegas! Ready for your guitar is a set of 3 transparent blue dice control knobs. The dice are each 16mm and when positioned on your guitar the numbers displayed will be 1, 4, 5 (blues progression). These are push on style knobs that fit split shaft Gibson, Gretsch, Fender, and most other electric guitars with knurled shaft pots. Will not fit solid shaft. See store for other knobs available. Many colors available, see our listings.