7MM/8MM/6.35MM Guitar Truss Rod Wrench Adjustment Tool with Screwdriver for Guitar Instrument The truss rod wrench is made of quality metal. Long handle length allows easier access to truss rod cavity. Fits most (not all) Gibson guitars as well as other guitars requiring a wrench. Features a nut driver on one end and a Phillips screwdriver on the other. Used for adjusting the amount of relief in the guitar neck, suitable for electric guitar replacement parts. The 6.35MM (1/4 inch) model is suitable for most Taylor acoustic guitar series (not applicable to Taylor’s classical guitars). Please check size specifications carefully. Short and long models are available; ensure proper fit to avoid interference with the guitar body or insufficient reach. The 7MM model is suitable for select Korean PRS, Jackson, Taylor, and Ibanez guitars. Please verify the required size for your instrument. The 8MM (5/16 inch) model is suitable for select American-made Gibson and ESP electric guitars. Please confirm the correct size for your guitar. Color: Black / Silver Material: Iron Size: 6.35MM / 7MM / 8MM Package Contents: 3 x Guitar Truss Rod Wrench Note: Light shooting and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement allowance is +/- 1-3cm.