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5Pcs Guitar Truss Rod Allen Wrench Set Guitar Repair Tool Kit Repair Wrench Wood Handle 5mm for Martin Guitar Neck, Bridge, Knob, Nut Locking Adjustment Includes 1.27mm, 1.5mm, 2mm, 4mm, 5mmAmazon$7.88
Frautron 9pcs Guitar Truss Rod Allen Wrench Set for Most Guitar Bass Neck, Bridge, Truss Rod, Knob, Nut Locking Adjustment, Includes 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 1/20in, 1/8in, 3/16inAmazon$18.99
MIECOO 17PCS Guitar Truss Rod Allen Wrench Set, Includes 7mm & 8mm Truss Rod Hex Box Wrenches and 4mm, 5mm, 6mm Lengthened Ball End Truss Rod Wrenches Repair Tool and Guitar Spanner WrenchAmazon$7.88
Frautron 2pcs 4mm & 5mm Ball End Guitar Truss Rod Allen Wrench Repair Tool for Martin Acoustic Guitar Truss Rod Adjustment, Deep or Narrow Truss AdjustmentAmazon$14.99
MIECOO 12PCS Guitar Luthier Repair Tool Kit, Includes 11PCS Guitar Bass Neck Bridge Nut Screw Adjustment Truss Rod Allen Wrenches and Guitar String Action Ruler Gauge for Guitar & BassAmazon$15.49
YuuKai 46-piece 1/4-inch drive socket ratchet wrench set, suitable for bicycle &motorcycle &car repair tools, including screwdriver bit socket set metric and extension rod, allen socket setAmazon