Gold Acrylic Shell in a 1/8" (3mm) thick, 2ply acrylic pickguard with round over bevel. Its designed to slide under the overhang fret board on your Bass Mods Neck. So the 1/8" thickness comes down to about 3/32" only in the neck pocket area. I have a few K524 templates with different types pickups. let me know what you have and i will send you my temnplates to see if we have a match. I may need a tracing from you.