Black/white 3-ring set for an acoustic guitar soundhole.
Inside diameter: 4-9/32" (108.74mm)
Outside diameter: 5-3/4" (146.05mm)
Thickness: 3/64" (1.19mm)
The thin outer rings are 0.081" (2.06mm) wide, the center ring is 0.302" (7.67mm) wide.
Note: These rosettes are not continuous circles. Commonly installed with the ends of the rings trimmed, butted and covered by the fingerboard.