This will work for all import tremolo guitars but a squire affinity series because the affinity is not 6mm but more 7-9mm big hole. To my knoledge there is no replacment tremolo arm to the affinity. If you want this anyway you should get a solid tremolo block. Possibly a import sized bridge replacment which i've found at guitarfetish.com. Otherwise buy this for your mex or other imports.

I ordered this item, returned it, and returned the exchanged item as well. This part number does NOT fit the affinity strat! It must be for a standard strat only. It is too small at the threads. It drops right in the hole instead of threading. The packaging on both were labelled as a tremolo arm for a standard (Fender) Mexican standard. There was a sticker on the back that said trem for Squier KC.