As we all know, most modern vehicles are mostly all metric. Most of my tools are Snap On, no im not a pro mechanic, I just like the quality and performance of snap on and can afford a few items here and there. But it got me thinking, after I just bought a set of 3/8 dr. SAE sockets off the snap on truck this morning, is it really necessary in todays world to have a complete set of SAE tools? Or should I just buy the few spare sockets wrenches as I need them? I like to think of the saying, better to have and not need than need and not have. In recent memory, in the past year ive used a 1/2 socket to remove the transmission pan on my truck(one of the only SAE bolts on the whole truck) and i quite regularly use a 9/16 socket or wrench to do oil changes on my buddys chevy (88-95 body style had SAE threaded plug). besides that, i cant think of a time that i regularly use SAE.