Guitar Neck Shims 3Pcs 0.25°, 0.5°, and 1°Degree Nylon Gasket for Guitar and Bass Bolt-on Neck Repair 3 x 2.2inch Black (Black)

Fit perfectly in my 2004 Squier P bass. I’d modified this one with a Gotoh bridge and the action could not be set right after truss rod adjustment. These shims worked great. I used .5 shim plays perfectly now.

well there are other options with many different materials but this one does the same job for a reduced price, then again, these are just basic plastic shims so it still fills like an expensive product for what it is.