Beard MB-14 Hard Maple Spider Bridge Insert – Unslotted (set of 2)

Hard maple produces the brightest tone, so if you have a Reso guitar that you feel is a bit too dull sounding these would be a good option. 

Unslotted, can be slotted to a preferred custom spacing that way.  Some final sanding and fitting may be necessary to achieve desired fit.  Works with spider bridge setup.