Wilkinson Contemporary 5+1 Strat Tremolo - ChromeA six screw vintage style system but with the smooth fulcrum action of a two pivot set up. The unique Wilkinson 5+1 layout eliminates the chance of screws binding in the holes resulting in a return to original position second to none. Push in vibrato arm, stainless steel saddles and “stagger drilled block make this an ideal upgrade for your old vintage bridge. Solid steel sustain block.Features: Smooth fulcrum action of a two pivot set up Chrome Center to center post-56mm String span-54mm String pitch-10.8mmCondition: These are brand new, fresh from the factory.