Musiclily Pro Hardened Steel 5/32 Inch or Metric 4mm Allen Key Hex Wrench for Guitar Bass Truss Rod Adjustment

For guitar bass truss rod adjustment, also can be used for general purpose 5/32 inch(3.96mm) or metric 4mm hex wrench. Total length: 175mm(6-57/64 inch). The hex key is adjustable and removable Made of hardened steel, precise machined, high strength, stable and durable, good wear resistance, resistant to stripping or breaking Non-slip aluminum alloy handle with end caps, comfortable to grip and easy to use. Each handle marked with clear size for easy identification and use, also with set screw for easy length adjustment Package includes: 1pc wrench