Feature:1. Each model is equipped with a screwdriver at the end. The fixed screwdrivers are all 5mm/0.2in thick, and the size of the head cover screws are different.2. Used for folk/electric guitar DIY parts accessories, pipe shape design, builtin hexagonal adjustable keys, made of highquality iron materials, and has high wear resistance.3. Iron guitar hexagon wrench, fine workmanship, smooth surface, high gloss, used for guitar neck repair and maintenance tools.4. 6.35MM model is suitable for Taylor most folk guitar series. If you are not assured, please choose according to your actual size5. The 7MM model is suitable for PRS of Koreanmade, for Jackson of Japanmade, for Taylor and for Ibanez of Japanmade guitars. Please choose according to your actual size.6. The 8MM model is suitable for Gibson some Americanmade, electric guitars and for ESP of Japanmade electric guitars. Please choose according to your actual size.Specification:Item Type: Guitar Rod WrenchMaterial: IronModel: 7MM, 8MM, 6.35MMSize: Approx. 8 x 2cm/3.15 x 0.79in.Package List:3 x Guitar Rod WrenchNote:This product is a set of three sets of three models each as a set. Please check the size you need to buy