The Milwaukee 48-32-4004 Shockwave 32-Piece Impact Driver Bit Set is a compact fastening set built for impact drivers and drill drivers. This is a driver bit set designed for general screwdriving and nut driving across common jobsite fastening tasks. Model Number 48-32-4004. If you need one small case that covers the bit sizes you actually reach for, this set makes sense.

What matters here is fit and durability. Milwaukee builds these SHOCKWAVE Impact Duty bits around a custom-machined tip and Wear Guard tip design to keep the bit seated better in the fastener. On the job, that means less slipping out of the screw head, less chewing up hardware, and less time swapping out worn bits halfway through an install.

The other big advantage is the SHOCKZONE shank design. Instead of making every bit the same, Milwaukee tunes the shank geometry by tip type so it can absorb peak torque and help prevent breakage. That is especially important when you are running an impact driver hard on long screws, cabinet hardware, electrical boxes, service panels, or general assembly work where cheaper bits tend to twist or snap.

This 32-piece set is not just a pile of duplicate bits tossed in a case. You get a practical mix of 1-inch and 2-inch Phillips, square, slotted, Torx, and hex bits, plus a magnetic bit holder and two magnetic nut drivers. That mix gives you short bits for tight access, longer bits when you need stand-off from the chuck, and nut drivers for common sheet metal and light hardware fastening.

The case is part of the appeal too. Milwaukee calls it a customizable accessory case, and it is designed to fit in PACKOUT organizers. For anyone already working out of PACKOUT, that matters because your driver bits stop floating around in a tool bag or getting mixed in with loose fasteners. It is a small thing until you are on site looking for a square drive bit you know you had yesterday.

In practical terms, this set is best for pros and serious DIY users who want a reliable impact bit set for everyday fastening, punch-list work, service work, hardware installation, and general repairs. It is not a specialized kit for one trade or one fastener type. It is the kind of all-around impact driver bit set that earns a permanent spot in the truck, the utility drawer, or the PACKOUT stack.

A smart everyday impact bit set

The Milwaukee 48-32-4004 Shockwave 32-Piece Impact Driver Bit Set is the kind of compact set that covers a lot of day-to-day fastening without wasting space on filler.

• Who it's for: Anyone running an impact driver or drill driver for routine installs, service calls, hardware work, maintenance, and general fastening.
• Why it stands out: The bit mix is practical, the SHOCKZONE design is built for impact use, and the case plays nicely with PACKOUT organizers.
• Worth knowing: This is a versatile all-around bit set, not a giant master kit. If you burn through one drive style every day, you may still want extra refill packs of your most-used sizes.

• Is this set made for impact drivers? Yes. The bits are impact-rated and specifically designed for use with impact drivers and drill drivers.
• What shank size do these bits use? The bits use a 1/4 in hex shank, which fits standard 1/4 in hex accessory interfaces.
• Does this set include nut drivers? Yes. It includes one 1/4 in magnetic nut driver and one 5/16 in magnetic nut driver.
• Will the case work with PACKOUT storage? Yes. Milwaukee states the customizable accessory case is designed to fit in PACKOUT organizers.