Grover Right Angle Truss Rod Adjustment Tool Fits Gibson 5/16 inch truss rod nut

Truss rods allow the curvature of the neck to be adjusted due to the natural “bows” or “warps” caused by string tension. The Grover truss rod wrench is made to fit the two most widely used truss rod sizes; 1/4 “ and 5/16”. An indispensable tool for all players. This product is the 5/16 size.