Check the listing for details. Tone Ninja Tuners 7 String 3x4 Set, Chrome. Color: Chrome, Condition: New. Listed at 40.02 USD. Tone Ninja Tuners, 7 String 3x4 Set, Chrome Manufacturers Part Number: TN-T7C-3x4 This upgrade kit is for all 7 string 3x4 guitars that use a 135 degree screw mount. These are a drop in upgrade for guitars that use that mount pattern with a 10mm modern peghead hole. [3x4 is, for a right handed guitar, as you are playing it, three tuners on top and four underneath] If you are not sure if these will fit your guitar, please ask. These kits are available in Black, Black Nickel, Gold, Nickel, Chrome and Satin Chrome, and in most 6 & 7 string configurations. Locking equivalents are also available. Kit contains: 3 bass side tuners (one with large bore for string gauge up to 0.085") 4 treble side tuners 7 hex screw in bushings 7 washers High quality, made in Korea tuner set with a 16:1 tuning ratio. All Tone Ninja tuners come with a lifetime limited warranty. A wide variety of add-on custom buttons is also available for these tuners. Buy with confidence from SportHiTech, an authorized Tone Ninja Dealer. All products are factory fresh and in original retail packaging, and carry a limited lifetime factory warranty.