Stronger than an equivalent volume of steel, carbon/titanium fiber rods can supplement an adjustable truss rod to help prevent neck twisting. Feature: Short sections can be installed to reinforce the base of a peghead.Formed with heat and pressure in an epoxy base, carbon/titanium fiber adds little weight, but adds significant stiffness.A good neck stiffener tool for Luthiers.A must-have tool for pro luthier shops and home shops alike. Two Dimensions for choose: Dimensions 1: 0.12 x 0.24 x 15 inch (3mm x 6mm x 380mm).Dimensions 2: 0.12 x 0.24 x 17.7 inch (3mm x 6mm x 450mm).two material can be choose: carbon, titanium Package Includes: 2 pieces fiber neck rods Guyker Acoustic Classical Guitar Tuners, Open Frame Style Guitar Tuning Keys ... Guyker Guitar Potentiometer Control Knobs with 6.3mm Dia. Shaft Pots - 3PCS A... Guyker Guitar Locking Tuners (3L + 3R Handed) – Vintage Deluxe Lock String Tu... Guyker Double Rocking Tremolo Bridge, 6 String Electric Guitar Spring Stabili... Guyker Guitar Bridge String Spacing 10.5mm, Zinc alloy Tune O Matic Bridge wi... Guyker Guitar Input Jack Plate, Metal Oval Boat Shape Jackplate Socket Ferrul... Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews — — 4.3 out of 5 stars 152 — — 4.3 out of 5 stars 13 Price $77.99$77.99 $37.99$37.99 $26.99$26.99 $90.99$90.99 $24.99$24.99 $16.99$16.99 Gear Ratio 1:14 gear ratio. / Gear Ratio - 1:15, designed to fit modern 9mm headstock holes. / / / Number of String 6 / 6 6 6 / Feature Acoustic Classical Guitar Tuners The Inner hollow shaft pot is Approx. 6.3mm(0.25 inch) in diameter. Locking tuning key / / Suitable for electric guitar building, replace your worn out parts. Package included Mounting hardware (screws, bushings and washers) included. 3 pieces control knobs Mounting hardware (screws, bushings and washers) included. / / 1 piece Color Available 4 tuner handle optional: with the only difference being the size of the tuner handle. 3 colors available: chrome, gold, black. 4 Colors Available: Nickel, Black, Golden, Chrome 4 Colors available:Chrome, Golden, Black, Rainbow Chameleon 3 Colors Available: Black, Chrome, Golden. 4 colors available: chrome, gold, black, bronze