SUMMIT professional luthier open end wrenches, specially designed for easy, “damage-free” tightening machineheads hexnut, when strings on. Special tool steel entirely hardened and tempered to 56÷60 HRc, surface finish chrome plated according to: EN 12540.
Comes in a variety of sizes:
-open end 12mm/open offset ring 14mm
Also available in a convenient set of all six saving you 12%!
Part # 8007