This item is a set of machine heads tuning pegs for 4 string bass and guitar, which are adopted with strong zinc alloy. The pegs are used to fix strings and improve and adjust the sound of the instrument. The set comes with 4 pcs guitar tuning machines heads, 4 pcs ferrules and 16 pcs screws, easy to install. design, manufacturing process and accurate grinding ensure practical use and elegant appearance. Feature - Color: Silver - Material: Zinc alloy - Peg center holes spacing: 25mm/ 0.98 inch - Overall Size: Approx.117 x 38 x 40mm ( W x H) - Comes with 4 right tuner heads, vintage open style bass tuners. In R4 configuration for right handed basses. - Strong metal body ensures great endurance and practicability. - Mainly used to fix strings, improve and adjust the sound of the instrument. - 4 pcs ferrules and 16 pcs screws are included for easy installation. - Essential instrument parts for 4 string bass and guitar. Package list: 4 x Machine heads 16 x Mounting screws 4 x Ferrules