Milwaukee’s biggest flex is this $4,000 PACKOUT 366-piece Master Mechanics set (48-22-9495), and in this video I go drawer-by-drawer so you can see what you’re actually getting. I break down the socket layout (SAE and metric across 1/4, 3/8, and 1/2), the impact sockets, extensions, breaker bar, picks, adapters, and the wrench trays. I also call out the stuff that made me go “why?”—like skipping the 20mm in the metric set, and the fact the wrenches aren’t flex-head. If you’re mostly metric like me (BMW/JDM life), you can delete a lot of SAE and free up space fast. Then I get into what matters: how to make the PACKOUT setup work in the real world when you’ve already got power tools. I test fitment with Milwaukee impacts (compact, mid torque, the Gen 2 stubby, even a high torque) and show why the 2-drawer PACKOUT is the move if you want a mobile, functional stack. The 3-drawer sounds good on paper, but it’s tight enough that you’re basically losing utility. My takeaway: the kit is loaded, but your best “upgrade” is reconfiguring drawers around what you actually grab every day—especially if you want sockets + impacts living together.