Features: Metal construction, anti-rust, anti-corrosion, high performance of stability and durability. Complete set with 3 left and 3 right machine heads and other fixing accessories, easy to install. Tuning fast and accurately, difficult to be out of tune. Matte black head and glossy silver shaft with perfect workmanship and high-technology, good-looking, very easily matched for your ukulele and also have good decoration effect. Ideal replacement parts for your ukulele. Specification: Condition: 100 Brand New Material: Aluminum Alloy Color: Matte Black + Silver Type: 2L 2R Fit for: Ukulele Tuner Hole Diameter: Approx. 10 mm / 0.39 inch Shaft Length: approx. 24 mm / 0.94 inch Weight: Approx. 98 g Packing List: 4 x Machine Heads(2L 2R) 4 x Threaded Bushings 4 x Ferrules 4 x Screws