This arm is sturdy and holds up well. I hack the arm in half to be able to pick the strings close to the bridge and still have "bend power". IF YOU HAVE A MEXICAN STRAT OR SQUIRE STRAT (Or other import) USE THE 6mm STEW-MAC TREMOLO ARM. This arm is smaller in diameter and will only work on the US models.
Seems to be well made, but do not purchase to replace your made in Mexico Stratocaster, it will not fit right.