The exact set of the neck can vary from guitar to guitar so there is no way of knowing exactly what thickness of shim(s) your guitar will need until you've got the instrument on the work bench. Best recommendation is to use shim pack, which contains the six most commonly used shims, plus two oversized shims for use in humbucker-size routs. Shims can be stacked to achieve a variety of heights. Shim Pack includes shims of the following thicknesses: (2) 1/32", (2) 1/16", (1) 3/32", (1) 1/8" and (2) 1/32" oversize shims. NOTE: No returns on shims. No customizing contents of the shim pre-pack.