Electric Guitar Double Locking Tremolo Bridge System Tremolo Locking Vibrato Bridge Tailpiece for ST Guitar Replacement Line Spacing 53.5mm/2.11 inch when introduced to 74mm/2.91 inch spacing; Nut width 42mm/1.65 inch; Mounting screws row width 52.5mm/2.1 in. A double vibrato system usually has two parts, a neck lock and a bridge vibrato system. In addition to pressing the handle, the double shock can also raise the handle to increase or decrease the string sound of a semitone, full sound, or two or three full sound. This tremolo bridge is made of metal, good texture with fine workmanship, strong and durable to use. The tremolo bridge is equipped with screws and a wrench, it is easier to assemble. Fits for electric guitar, locking tremolo, locking nut. Made of qualified zinc alloy, the tremolo bridge with excellent workmanship is durable and sturdy. The lightweight and portable size makes it convenient for you to carry, and you can play your guitar with them for better durability anywhere. It helps you create true vibrato manually by changing the level of intonation and pitch. All mounting accessaries are also included in the package, making it easy to install with no other tools required. Color: Silver + BlackMaterial: Alloy A/Alloy B-Zinc Alloy + Plastic Package Contents:1 x Main Body1 x Rocker3 x Tension Springs1 x Top Cushion Cover2 x Top Pillow Screws1 x Hook2 x Ha