The bridge is good, especially for the price. The tremolo block is nice and tick, saddles are ok, nothing special but good.
Tremolo arm is a bit weak I think, make sure to have it fully screwed in before using it as it might (probably will bend or break).
Overall no complaints at all, except for the single issue that the holes for mounting to the body do not match the holes on my Mexican Strat.
The holes for the tremolo block do not match the spacing for the holes on my Mexican Strat either.
Same with the saddles, they are slightly wider than the standard ones so they cannot be used as a replacement for an existing bridge.
IF you are building a guitar from scratch then - no particular issues. If you want to replace a broken tremolo on a Mexican instrument then be careful, chances are it will not fit, at least from my experience.