Allen Key for the JLD Bridge Doctor/JLD Bridge System
Once you have fitted the JLD Bridge Doctor, you then need to put the device under tension. You would do that by tightening the grub screw against the tension rod. This allen key is exactly the right size to do just that.
This Allen Key for the JLD Bridge Doctor is manufactured to SAE/AISI 8650. Its fully hardened alloy steel ensures a tough, ductile wrench with extra hard surface for longer life and retention of dimensional accuracy.
You can find the JLD Bridge Doctor HERE