Guitar Truss Rod Wrench Set, 4mm/5mm Ball End Allen Keys, Fits Martin Acoustic Guitars

PRECISE FIT: This set of ball-end Allen wrenches are specially sized to fit Martin guitar truss rod bolts with diameters of 4mm and 5mm allowing for precise adjustments. ERGONOMIC DESIGN: The ball-end shape of these wrenches allows for easier access into narrow guitar neck cavities compared to standard hex wrenches, reducing risk of scratches or damage. The 4mm and 5mm ball end allen wrenches provide excellent grip and maneuverability, allowing you to easily access and adjust the truss rod in even the tightest spaces. EASY TO USE: At only 5 inches in length, the compact size of these wrenches makes them easy to manipulate in tight spaces within a guitar neck for quick truss rod tweaks. TWO SIZES INCLUDED: This set includes both a 4mm and 5mm ball-end Allen wrench to ensure compatibility with truss rod sizes used on most Martin acoustic guitars for proper neck relief adjustments.