With a hardened steel plate, heavy steel block, and stainless steel saddles, this is a massive upgrade that you will hear and feel. Perfect spacing for US 2-point trems and a big comfortable tremolo arm with adjustable tension. The best trem you can buy for a fraction of the cost of the "branded" equivalent. Comes with mounting posts, allen key, tremolo arm, trem springs, trem claw, and 2 trem claw screws.
See alternate photo for dimensional drawing.