Kluson®'s updated take on a sustain block is an exact fit for vintage USA Kluson® tremolo bridges. Featuring all US threads, this will bolt right on to a 1957 tremolo, adding the tone of your choice from precision milled aluminum, steel, or brass. Right handed tremolo use only. Mounting screws included.

Specifications:

• Aluminum:3.36 oz.
• String Spacing: 2 7/32 in.
• Screws Included
• Will not fit Fender American Standard Series Tremolo