GREAT GUITAR ACCESSORY: 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. INCLUSIVE ACCESSORY: It comes with screw, springs and other mounting accessories, no extra tools needed, very easy to install and operate, suitable for ST 6 string electric guitar. PREMIUM MATERIAL: This product is made of qualified zinc alloy, good texture with fine workmanship, solid, firm and durable to use, ensures a long service time. EASY TO USE: This is highly controllable within its range of motion and requires little force to operate. Condition: 100% 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 Allen Wrench 8 x Screws 3 x Springs