Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon ESP Arming Adjuster ( trem block) ESP Sold out Rp450,000.00 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Sold out Spinner icon Notify me when back in stock Email address Email me when available This unit eliminates any need to make sure that two springs are adjusted the same (like on the BackStop). It's small, easy to install. It comes across as the latest in the evolution of trem stabilizers toward perfection.