Different with Opean-Gear Tuning.The Longest Diameter is 10 mm(0.39 inches),it suits for using Quasi-Closed Ukulele.
Package includes: 4pcs * ukulele guitar Tuning Pegs/ machine head (2 Right and 2 Left), 4pcs * ferrule, 4pcs* threaded, 4pcs* screws, 1pc * quality Ukulele Felt Picks.
Note: The color of the item may vary slightly due to photography and your own computer High quality Quasi-closed UKULELE machine heads 2R2L TUNERS CHROME surface machine heads with CHROME buttons Gear Ratio: 1/17 The tuner hole diameter: approx. 10mm/0.394 Shaft length: approx. 24mm /0.945inch Package Content:4 x Ukulele machine heads