Jackplate for Les Paul®, Chrome plated, with Screws. Jack hole diameter is 3/8" (9.5mm). 1-11/32" square, with the mounting screw holes spacing - 1" (25.4mm). The jackplate has a slight curve to match the body's curved sides. Manufactured by Gotoh. Note:This is intended for use 1/4" jacks and will not work with guitars using metric sized components.