These laminated black/white plastic truss rod covers will jazz up the peghead of your instrument, and cover those unsightly truss rod cavities. Truss Rod Cover Screws sold separately.
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#0614 Standard dimensions 2-3/8" x 1-1/4" (60.32mm x 31.75mm). 2-1/16" (52.39mm) mounting hole spacing.
#3991 Modern dimensions 1-1/4" x 1-3/4" (31.75mm x 44.45mm). 13/16" (20.64mm) lower mounting hole spacing, and 1-7/16" (36.51mm) spacing to the upper hole.