Check the listing for details. Callaham Mexican Standard Enhanced Trem Block, Right Hand. Condition: New. Listed at 71.00 USD. Callaham Mexican Standard Enhanced Tremolo Block, Right Hand This trem block replaces the stock zinc block in the following guitars without modification:Mexican Standard Series Strats® with 6 pivot bridge and 2-1/16" string spacingMexican Classic Player Strats® with 2 pivot bridge and 2-1/16" string spacingHighway 1 Strats® (2006 and later) with 6 pivot bridge, 2-1/16" string spacing, and 2-7/32" mounting spacingAmerican Specials with 6 pivot bridge, 2-1/16" string spacing, and 2-7/32" mounting spacing These tremolo blocks are precision-made in the United States. Callaham trem blocks are made in USA from heavy, cold rolled steel and weigh a full 10oz (280g), producing incredible sustain, note clarity and response. The string ball ends seat just inside the trem block, as opposed to seating halfway up, which also increases sustain and tone transfer while minimizing the risk of a broken string becoming lodged in the block. Note that the metric arm that comes stock on a Mexican Standard Strat® will not work with this block. Any 3/16" diameter 10-32 thread tremolo arm will work, but we recommend one of the three Callaham virtual pop-in arms for Callaham blocks. Specialty Guitars has been an authorized Callaham dealer since 2004. Free shipping within the US on all orders of $75 or more!