Truss rod 13 1/8" for guitar necks

Specifications:

13 1/8" Length (varies slightly due to construction 13" - 13 1/8") Rod length is tip to end of nut
Two Way Adjustment
4mm Allen key head
body is wrapped in blue shrink wrap to allow for gluing.

Requires:
1/4" wide slot
3/8" depth (approximate, actual is .369" allow for adjusting)
Cut for nut area is 1.75" long by .425" (about 7/16" total top to bottom)
Wrapped two way adjustable rod