High quality Notched Edge Gold Speed Knobs compatible with USA Les Paul SG and other guitars (Set of 4). Recessed style knobs fit 24 fine-spline (imperial) split shaft pots, CTS pots, etc. *These will not fit most Epiphone guitars which require a metric knob for 18 coarse-spline pots. Features: High quality Notched Edge recessed speed knobs. Package of 4 knobs. Recessed (present day) style knobs sit closer to the body and fit 24 fine-spline USA (Imperial) / CTS style split-shaft pots. Width: 1 in. (25.3 mm) Height: 1/2 in. (12.4 mm) 6mm shaft diameter These will not fit most Epiphone guitars which require a metric knob for 18 coarse-spline pots. Brand new - Vintage Forge Factory Fresh Packaging