Bosch 40 pc Driven Impact Screwdriving and Drilling Custom Case Set

A compact, impact-ready kit that gets most of the everyday jobs right

I tossed the Bosch 40-piece set into my bag for a week of punch-list work—cabinet installs, a few deck board replacements, and some light electrical and hardware mounting. By the end of the week, the kit had earned a spot in my go-bag. It’s not perfect, but it covers the majority of fasteners I encounter in wood and light metal, and the case keeps everything visible and easy to grab without fuss.

Case and organization

The case is better than most in this price/size class. The latch is positive, the hinge feels sturdy, and the rubberized bumpers take the edge off drops. I like being able to see the contents at a glance through the clear lid, and the tilt-in/tilt-out rails make reconfiguring the layout pretty painless. I shifted the Torx rail to the center row and moved the drill bits up top so the sizes I hit most often are front and center. After a few rides in the back of the van and one accidental drop from a ladder shelf, everything stayed put.

There’s a standard magnetic bit holder included—not a locking quick-change sleeve. It holds onto 1-inch inserts well enough, but if you’re used to a one-handed quick-release holder, you’ll miss that here. I kept my favorite locking holder clipped to my drill bag and swapped it in for speed work.

Bit selection and what’s inside

Coverage is aimed at common carpentry and general maintenance:

• Phillips: P1, a healthy spread of P2 including two “reduced” P2, and a P3
• Square (Robertson): R1, R2, R3 with extras of R2
• Torx: T5, T20, T25 (extras), T30, T40
• Seven 2-inch power bits in the most-used sizes
• Eight black oxide drill bits from 1/16 to 1/4 inch, with duplicates of the smallest sizes

The P2 reduced tips are genuinely useful. On trim-head or bugle-head screws with tight recesses, the reduced P2 seats cleanly where a standard P2 can bottom out and cam early. The duplicates of 1/16 and 3/32 are also smart; those are the sizes I snap most often for pilot holes, and having spares prevents a mid-task stall.

There are a few notable omissions. T10 and T15 are missing—surprising, given how common they are on door hardware and small fixtures. There are no nut drivers, no socket adapter, and nothing longer than 2 inches. If you regularly reach into deep recesses or need 3-inch/6-inch bits, you’ll want to supplement.

Fit and driving performance

Bosch’s precision-milled tips and torsion-zone shanks do what they’re supposed to do. Over a day of driving 3-inch exterior deck screws into pressure-treated pine, the P2 bits sat deep and stable, with noticeably less wobble than some of the more rounded economy bits. Cam-out was rare unless I got sloppy with the line of force. The magnetic tips have enough pull to hold a screw horizontally for one-handed starts without feeling gummy.

On Torx, the T25s are standouts. Modern decking fasteners often run T25, and these lock into the recess with a crisp, square feel. I drove structural screws up to 5/16 by 4 inches with an impact driver set to medium torque; the torsion zone showed the expected twist marks, but no fractures or mushrooming.

Square bits (R2 and R3) also fit cleanly in cabinet screws and pocket-hole fasteners. If you’re in a region where Robertson is common, this coverage will feel familiar and useful.

Drilling performance

The black oxide drill bits are intended for wood, plastics, and mild steel. In softwood and plywood, they track straight with a predictable, moderate feed rate and clean chips. I used the 1/8 and 5/32 to pre-drill for screw shanks and hinges, and the holes came out clean with minimal fuzz.

In 16-gauge mild steel junction boxes, the 3/32 and 1/8 cut without drama as long as I kept the speed down and used a drop of oil. They will discolor and dull faster than cobalt or titanium-coated bits if you push them in metal, so pick the right bit for stainless or repeated steel work. For cabinetry, hardware, and light electrical, black oxide is appropriate and cost-effective.

If you prefer quick-chucking everything in an impact driver, you’ll likely use them with a hex bit holder. That works fine; just be mindful that impacts are harder on black oxide than a clutch-controlled drill/driver.

Durability over a week of use

I didn’t baby this set. After about 150 deck screws, a couple dozen cabinet screws, and the usual household fixtures, the P2 bit I used most shows slight finish wear but still fits positively. No broken tips. The torsion-zone design takes the edge off the violent hammering of an impact driver and seems to add real life versus straight-shank inserts.

Laser-etched markings on the bit shoulders are a small but welcome touch. Even after a day’s worth of dust and some glove grime, I could still read the sizes without squinting. That saves time when you’re picking between T25 and T30 by eye.

Ergonomics and small usability notes

• The magnetic pull is moderate—strong enough to stage a screw but not so strong that it drags fasteners off the work surface unintentionally.
• The standard bit holder is serviceable but not exceptional. If you frequently change bits mid-task, upgrade to a locking quick-change holder.
• The case opens flat and stays flat, which makes the tilt-in/tilt-out rails actually useful on a surface. With some other kits, the rails fight gravity; here they stay at attention.

Where the selection falls short

A few gaps keep this from being a true “one case and done” kit:

• No T10/T15: Common on door hardware and small machine screws.
• No long bits: Only seven 2-inch power bits and nothing longer. Recessed cabinet handles and deep pocket work demand 3-inch or more.
• No nut drivers or socket adapter: HVAC brackets, lag shields, and hex-head screws will send you to a second case.
• Drill bits stop at 1/4 inch: Fine for pilots and clearance holes, but you’ll need a larger set for furniture knock-down fittings or conduit.

None of these are deal-breakers for everyday carpentry and light install work, but they’re worth noting if you’re trying to slim down to a single kit.

Comparisons and value

Against similar compact sets from Milwaukee and DeWalt, the Bosch kit’s strengths are its clean bit fit, the torsion-zone performance under impact, and a genuinely useful case layout. Milwaukee’s Shockwave line offers more long bits in some assortments; DeWalt’s MaxFit tips have a slightly more aggressive grab on Phillips heads but can feel “sticky” in some fasteners. Bosch lands in a nice middle ground—secure engagement without over-tight tolerances that bind.

Price-wise, it typically sits right with those brands. If you already own long bits, nut drivers, or a drill index, this 40-piece package fills the high-churn, high-usage slots well without redundancy.

Who it’s for

• Carpenters and deck builders who drive mostly Phillips, Torx, and square fasteners
• Installers and maintenance techs who want a compact, easy-to-carry bit kit with a competent spread of pilots
• DIYers upgrading from bargain-bin bits who want an impact-rated set that lasts

Who should look elsewhere: anyone focused on automotive work (you’ll want nut drivers, socket adapters, and more Torx sizes), metal fabricators (cobalt bits and step bits make more sense), or finish installers who depend on longer reach bits daily.

Recommendation

I recommend the Bosch 40-piece set as a reliable, compact companion for day-to-day carpentry, installs, and general maintenance. The bits seat accurately, the torsion zones hold up under impact torque, and the black oxide drills cover common pilot work in wood and mild steel. The customizable case is well thought out and stays closed and organized in the real world.

I wouldn’t call it a complete, single-case solution—there’s no T10/T15, no nut drivers, and no long bits—but it’s an excellent core kit. Pair it with a couple of 3-inch power bits, a locking bit holder, and a small set of nut drivers, and you’ll be ready for most of what a workday throws at you without carrying two or three separate cases.