The exact replacement block you need for American Standard Stratocasters manufactured from 2008 to the present. 
Machined steel tremolo block with silver powder coat finish
Modern-style 2-1/16" string spacing

Tremolo block is pre-tapped and will accept a standard 10-32 threaded tremolo arm
Used on American Standard Series Strats (US) manufactured from 2008-present.  Can be retrofitted to other US and Mexico series guitars using modern 2-1/16" spacing as long as the block to bridge plate mounting screws also line up properly.