Features: 1.This product is made of qualified zinc alloy, good texture with fine workmanship, solid, firm and durable to use, ensures a long service time. 2.Suitable for ST 6 string electric guitar. 3.Comes with screw, springs and other mounting accessories, no extra tools needed, very easy to install and operate. 4.This is a fantastic tremolo for manually creating a true vibrato , The only true way to create vibrato is to change the tone above and below the normal pitch. 5.This is highly controllable within its range of motion and requires little force to operate. specification: This product is made of qualified zinc alloy, good texture with fine workmanship, solid, firm and durable to use, ensures a long service time. Suitable for ST 6 string electric guitar. Comes with screw, springs and other mounting accessories, no extra tools needed, very easy to install and operate. This is a fantastic tremolo for manually creating a true vibrato , The only true way to create vibrato is to change the tone above and below the normal pitch. This is highly controllable within its range of motion and requires little force to operate. s: Condition: 100% Brand New and High Quality Material: Zinc Alloy Color: Black Tremolo Size: Approx. 8.4 x 4.6 x 4.2cm / 3.3 x 1.8 x 1.6inch Suitable for ST 6 String Electric Guitar Weight: Approx. 219g Packing List: 1 x Tremolo Bridge 1 x Whammy Bar 1 x Body Mount Claw 1 x Hexagon Wrench 8 x Screws 3 x Springs