Milwaukee 3/8" SAE and Metric 6 Point Impact Socket Set

This is a great all-around 3/8" impact socket set for automotive work. You get both SAE and metric sizes, with shallow and deep sockets, so you’re not constantly hunting around for the right size or piecing together multiple sets.
 
I especially like having everything organized in one case that I can grab and bring straight to whatever I’m working on. Pair this with the Milwaukee 3/8" Stubby Impact and you have a really solid setup for the majority of everyday automotive jobs.