The Milwaukee 49-66-6801 SHOCKWAVE Impact Duty Socket 3/8"-Drive 19-Piece Metric PACKOUT Set is a 19-piece deep metric impact socket set built for 3/8 inch drive fastening work. This is a deep metric impact socket set designed for high torque fastening with impact wrenches, impact drivers, ratchets, and adapters. Model Number: 49-66-6801. If you need a socket set that can live on a truck, in a shop, or in a service cart without the markings disappearing after a few months, this one is aimed right at that problem.

What matters here is not just the piece count. Milwaukee built this set around real impact use, with forged impact steel and a 6-point socket design for durability in high torque applications. The non-slip hex geometry is there for a reason: it helps reduce socket and fastener rounding, which matters when you are working on stubborn hardware and do not want to chew up corners on metric fasteners. The dual-hole design and ring groove also make attachment and removal easier, especially when you are swapping sockets repeatedly during repair or assembly work.

The markings are one of the best practical features in the set. Milwaukee uses stamped and ink-filled size markings for better wear resistance, so the socket size stays easier to read over the life of the tool. That sounds simple, but it saves real time when you are moving fast and grabbing sizes all day. This set includes deep metric sockets from 6 mm through 24 mm, giving you broad coverage for automotive service, equipment maintenance, and general fastening tasks where metric hardware is standard.

Storage is another big part of why this set stands out. Instead of throwing loose sockets into a drawer, Milwaukee includes a PACKOUT low-profile compact organizer and a removable socket tray. That gives you two advantages: you can keep the set contained and easy to identify at a glance, and you can also pull the tray out for tool chest storage if that fits your setup better. If you are already using Milwaukee PACKOUT, this is an easy fit into that system. If you are not, it is still a cleaner way to store and transport a deep socket set than a basic blow-molded case.

From a build standpoint, this is a serious accessory set, not a throw-in. The chrome molybdenum steel construction is the right material choice for impact sockets because it is built to handle repeated shock loads better than standard chrome hand-tool sockets. Milwaukee also states that the set meets ASME industry standards, which gives buyers another layer of confidence that the sockets are built for the category they are sold into.

For compatibility, the set is optimized for 3/8 inch drive tools across cordless, corded, and pneumatic platforms. That makes it a flexible fit for mechanics, installers, maintenance crews, and contractors who use different drive tools depending on the job. It is not trying to be every socket set for every task. It is specifically a metric deep socket set for users who want impact-rated durability, readable markings, and organized storage in one package.

If you work on vehicles, mechanical assemblies, equipment, or any fastening job that leans heavily on metric hardware, this set makes a lot of sense. It is especially good for users who want one organized deep metric impact socket set they can grab and go without piecing together separate rails, trays, and organizers. If you mostly do light hand-tool work, it may be more socket set than you need. But if your sockets spend time on impact tools and get used hard, this Milwaukee SHOCKWAVE set is built for that kind of work.

A Smart Buy for Guys Who Actually Use Their Impact Sockets

The Milwaukee 49-66-6801 SHOCKWAVE Impact Duty Socket 3/8"-Drive 19-Piece Metric PACKOUT Set gets the important stuff right: durable sockets, readable markings, and storage that does not feel like an afterthought.

• Who it's for: Mechanics, maintenance techs, and contractors who need a dedicated deep metric impact socket set for 3/8 inch drive tools.
• Why it stands out: The stamped and ink-filled markings, forged impact steel construction, 6-point design, and included PACKOUT organizer make it more useful day to day than a basic rail set.
• Worth knowing: This is a metric deep socket set, so if you need shallow sockets or SAE coverage, you will still want another set alongside it.

• Is this a deep socket set? Yes. Milwaukee lists this as a 19-piece deep metric socket set.
• What drive size does this set use? It is a 3/8 inch-drive socket set.
• What socket sizes are included? Sizes range from 6 mm through 24 mm.
• Does it work with impact tools? Yes. Milwaukee states it is optimized for use with 3/8 inch drive impact wrenches, drivers, ratchets, and adapters.
• Does it include storage? Yes. The set comes in a PACKOUT low-profile compact organizer with a removable tray.