Clear Acrylic 1/8" thick 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 many Bass Mods templates... just let me know which model & year you have. 2016 thru current year are consistent pickguards. Earlier models we might need a tracing from you. We spend a lot of time with each customer to get it perfect.