DescriptionThis item is a set of 4 pieces of sealed bass tuning pegs machine heads, which are adopted with strong metal. The pegs are used to fix strings and improve the sound of strings. The set comes with 4 pcs ferrules, 4 pcs threaded bushings and 4 pcs screws, easy to install. Professional design, exquisite manufacturing process ensurepractical use and elegant appearance. instrument parts for acoustic and electric 4 string bass.Feature- Color: Black - Product material: Zinc alloy - Half round peg height : Approx. 56 mm - Headstock Shaft diameter: About 15mm - Comes with 4 pieces of sealed guitar tuning pegs machine heads, 2 left hand type guitar machine heads and 2 right type. - Strong metal body ensures great endurance and practicability. - Mainly used to fix strings, improve and adjust the sound quality of the instrument. - 4 pcs ferrules, 4 pcs threaded bushings and 6 pcs screws are included for easy installation. - instrument parts for acoustic and electic 4 string bass.