6R Inline Guitar String Tuning Peg Machine for Head Tunner Black

["Description:\r\nbrand new and high quality\r\nSet of 6 quality chrome machine heads for steel string (electric or acoustic) guitars (6R)\r\nQuality sealed machine heads\r\nHeavy duty internal gear\r\nTested\r\nDimension: 4 x 2 x 3.5 cm\r\nColor: Black\r\nMaterial: Aluminium alloy\r\nQuantity: 1 set\r\nNote:\r\nTransition: 1cm=10mm=0.39inch\r\nNo retail package.\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes:\r\nRight guitar machine heads x 6\r\nFerrules x 6\r\nScrews x 6"]