Best Impact Driver Bits of 2026

Three lengths in one box is what made this set the one we kept coming back to. You get 25 one-inch bits, nine 2-1/4-inch bits, and a single 3-1/2-inch bit, plus a magnetic bit holder, a magnetic sleeve, two nut drivers, and a socket adaptor. That is enough reach for a hinge screw inside a cabinet and enough length for a screw at the back of a joist bay, without buying a separate long-reach pack.

The 2-1/4-inch bits are the ones we reach for first. Each carries a machined FlexTorq zone behind the tip, so the steel twists slightly under the driver's hammer instead of passing every blow straight into the screw head. We spent most of our driving time watching two things: whether the tip seated without wobble, and whether the corners survived a run of screws. The CNC-machined tips seated cleanly, and the wear stayed at the tip rather than climbing up the bit.

The case deserves its own paragraph because most bit cases are miserable. Bits sit in a lift-out bar under a clear lid, so you can see what is missing without opening it, and each bit pops free on its own instead of fighting a rubber block. It also drops into a DEWALT ToughCase+ (sold separately), which is either smart system thinking or one more thing to buy, depending on your tolerance for modular storage.

Two caveats, both small. The one-inch row repeats several Phillips sizes, so a Torx-heavy workload pays for bits you won't use, and these are hardened steel that will round at the tip eventually. Neither changes the answer for a general-purpose box, and the 2-1/4-inch bits are long enough to see the tip without wandering off the screw.

Seventy-four pieces makes this the widest kit in this group, and it is the box we point at anyone starting from nothing. Forged tips, a heat-treat process Milwaukee reserves for its impact line, and an anti cam-out tip profile mean the business end is built for the hammer rather than merely surviving it. If you want to stop raiding someone else's toolbox every time a furniture kit arrives, this ends that.

What you pay for is breadth, and this set has more of it than anything else here. Whether that is worth it comes down to how varied your work is. An installer who meets five fastener types before lunch gets the money back quickly. Someone who drives deck screws and hangs the occasional shelf is buying capacity that stays in the box.

The one thing that frustrated us is the holders. The bits sit deep and grip hard, which is exactly right when the case is rattling around in a van and exactly wrong when you are switching sizes every few screws. Pulling a bit free takes a real tug, and across a long run of the same job that friction adds up. Set against it, the bits showed almost no wear after steady use, which is the trade we will take.

A tamper-proof Torx screw has a pin standing in the middle of the star, and no amount of downward pressure will make a standard T-bit seat in it. That is the screw you find on a vacuum housing, an appliance panel, or a truck bed cover at the exact moment you need the thing open.

This set covers TT7 through TT40 in 13 two-inch bits and 13 one-inch bits, with duplicates of TT20 and TT25, plus a magnetic bit holder. The steel is S2 with a torsion zone, the tips are CNC-machined rather than stamped, and a manganese phosphate finish keeps rust off. One detail worth knowing before you buy: the one-inch bits are not magnetic on their own. They pick a screw up only when they are sitting in the holder.

That two-inch length is what makes the set useful. Short security bits bottom out against a recessed cover before they ever reach the screw, and the long ones clear it. We keep coming back to this box for appliance and auto trim work, and the duplicates mean a snapped tip costs a minute rather than an afternoon. A T20 can let go on a stubborn screw — that is what a hardened tip under impact does — but you get a spare of the size most likely to go.

The L-key in the drawer is fine for one bolt. Forty fasteners into a flat-pack bookcase, you want the driver, and this is the set that turns a hex bolt into a two-second job instead of a knuckle-scraping one.

Twenty bits cover 5/64 inch to 5/16 inch in SAE and 1.5 mm to 8 mm in metric, all two inches long on 1/4-inch hex shanks, with four tiny L-keys at 1.27, 1.5, 2, and 2.5 mm for the sizes a driver can't physically reach. Sizes are engraved on each bit and printed on the holder, which matters more than it sounds when two bits differ by half a millimeter. What surprised us is how much of the work the two-inch length takes over: short enough to stay steady on a small screw, long enough to see what you are doing.

The case is the weak spot. It is roomier than 20 bits need, and the rubber holder lets bits fall out once the lid is open and the case gets tipped, so you end up picking 2 mm bits out of a tool bag. Keep them in the labeled holder and the set is fine; treat the case as a box rather than an organizer and it stops being annoying.

Reach is the whole point, and this is the pack we hand people who keep meeting screws they can't get a driver body near. A 3-1/2-inch bit stands the tool off the work, so you can drive a screw down inside a planter box, past a railing, or through a joist hanger without contorting a wrist or taking something apart first.

These are Phillips #2, five to a pack, black phosphate coated, and built on Milwaukee's Shockwave impact geometry. The tips hold a screw well enough that we could start one handed and let the bit carry it down to the surface, which is the sort of thing you notice halfway up a ladder. They also fit a manual screwdriver, so this is the bit that lives in the toolbag rather than the case.

The trade-off is commitment. Five identical bits is a lot of one size, and if your work runs to Torx or square drive this pack does nothing for you. Where it earns its place is a deck or a fence line, where every screw is the same and every one is out of easy reach.

Phillips #2 is the bit that dies first. It is the size nearly every job needs, the one that gets used at an angle when you are in a hurry, and the one whose tip rounds out while the rest of the set still looks new. Buying them five at a time is a sensible response to that.

These are two-inch bits with Bosch's Xtended Torsion Zone, a hardened core, and a precision-machined tip on a standard 1/4-inch hex shank. The two-inch length is the useful one for general driving: long enough to keep the driver body clear of the work, short enough to stay rigid when you are off to one side.

Two things to plan around. They are not magnetic on their own, so a magnetic bit holder does the work of holding the screw — worth knowing if you are used to bits that pick a screw up off a shelf. And the hardened tip that resists wear is also the tip that can let go on a stubborn screw, more so when you are driving at an angle. What you get in return is five of the size you actually burn through.

That is the role we see for them: refills, not a kit. A five-pack that lives wherever you drive screws means a rounded tip costs you a walk to the truck rather than a trip to the store. For a homeowner with one impact driver and a genuine mix of fasteners, the DEWALT set covers far more ground for slightly more money.

Forty-two pieces in a case small enough to drop in a tool bag is the pitch here, and it is a good one. The set is built around 1/4-inch bits in S2 steel, with a magnetic bit holder, a 3/8-inch socket adaptor, and a latch that stays shut in a bag.

The mix is sensible: Phillips, slotted, and Torx, with eight PH2 bits in the count — more than any other single size, which is exactly right given how fast PH2 wears out. Sizes are marked, the bits sit in molded slots, and nothing about the case feels like it will pop open on the way to a job.

The problem is the tips. A Phillips head can break on its first screw, and the tip is the weak point rather than the case or the holder. That would be easier to accept at a budget price; at roughly what our top pick costs, it is hard to justify. If you want one set for the house, put the money into the DEWALT.