Heavy duty 6 string vintage electric guitar tremolo bridge with whammy bar for ST SQ style guitar replacement, great replacement for old or broken tremolo bridge. | High gloss chrome unit with six individually adjustable, classic nickel plated steel saddles. | The base plate is made of steel, saddles and sustain block are made of diecast zinc, durable and sturdy. | Block Depth: 35mm, string spacing: 10.5mm(0.41inch), Spacing between mounting holes (1-6) is 52.5mm(2.07inch). | 100% brand new, high quality and testing is fine, includes all parts. Tremolo Unit, Arm, Springs, Claw and Screws.