I'm the office administrator for a 45-person construction company. I manage all equipment parts and tool ordering—roughly $300,000 a year across 14 vendors—and I report to both operations and finance. When I took over purchasing in 2022, my first real lesson was that the shop wasn't asking me for tools. They were asking me for outcomes.
"What do you need?" I'd ask.
"A bigger impact drill."
No. They needed holes in concrete, and "bigger impact drill" was just the closest vocabulary they had.
So now I run every concrete drilling request through the same comparison: a handheld impact drill versus a hydraulic drill attachment that mounts to a skid steer, mini excavator, backhoe, or bob crane. These aren't two products in the same category. They're two ways of approaching the same job—and the difference in their price tags is easier to understand than the difference in their long-term costs.
The comparison I use has four dimensions: drilling performance, labor time, total cost of ownership, and safety compliance. Here's what each one taught me.
What a Bigger Impact Drill Won't Fix
A decent impact drill with a carbide-tipped masonry bit can drill into concrete. That's true. For a 1/4-inch or 3/8-inch anchor hole in a cured slab, it's often the right tool. Put it in drill-plus-hammer mode, start the bit at an angle so it doesn't skid, then straighten it as it bites. Light pressure. Let the bit do the work. That's the honest answer to "how to drill into concrete" if you're holding the tool in your hands.
But there's a ceiling. Once you get past about 3/4-inch diameter, or when the concrete is reinforced, the impact drill starts to feel like a bicycle on a freeway. The bit glazes, the tool vibrates, and production falls off a cliff.
The hydraulic attachment is a different breed. A skid-steer-mounted drill rig from ABI Force Attachments runs off the machine's auxiliary hydraulics. Instead of impact energy, it uses rotation and downforce. Instead of a quarter-inch bit, it swings augers and core barrels measured in inches—sometimes a foot or more. Rebar becomes an inconvenience, not a stopping point.
The conclusion on this dimension is blunt: the impact drill makes a hole. The hydraulic attachment produces holes. If the job is one anchor in a footer, take the impact drill. If the job is twenty anchors by Friday, take the machine.
The Labor Math That Changed My Mind
This is where I admit I used to buy the wrong thing.
In March 2024, we had a 40-hole anchor layout in a concrete pad. With two guys trading off on an impact drill, the foreman budgeted a half-day. Bits got hot. One guy's arms gave out. The estimate drifted toward four hours, and that was optimistic.
We rented a bob crane that week, and the dealer sent along a hydraulic drill attachment to test. Same 40 holes: about 45 minutes. Maybe 50, I'm going from the field note, not a stopwatch. The difference was so large that nobody argued about the rental cost afterward.
Why does this matter? Because labor is the hidden line item nobody puts on a purchase request. A $240 impact drill doesn't look expensive next to an $8,500 attachment. But once you multiply crew hours by loaded labor rates, the cheap tool can cost more in one afternoon than the attachment costs in a year of use. The numbers I'm using come from quotes I requested in January 2025; prices move, so verify current rates with your suppliers.
One honest caveat: I had about two hours to commit to that rental before the machine's window closed. Normally I'd compare three suppliers and verify flow ratings, but there was no time. I went with the dealer we'd used before, based on trust alone. In hindsight, I should have asked about hydraulic flow compatibility first. Given the deadline, though, I did the best I could with what I knew.
Replacement Parts Are the Real Story
Nobody thinks about replacement parts when they're comparing an impact drill to a hydraulic attachment. They should.
When an impact drill dies on a jobsite, the technicians throw it in the bin and I order a new one. The drill isn't worth rebuilding. The masonry bits, though—those are the real consumable. A good carbide bit runs $35 to $60 for the ones we actually use, it dulls fast if you lean on it, and a crew drilling concrete all day can go through several per week. That line item adds up over a season.
The hydraulic attachment is the opposite. It's an expensive capital tool, but it's repairable—and that's where ABI replacement parts became relevant to me. When I requested a drill rig quote last year, the ABI rep didn't just send a price. He sent a parts breakdown: pilot bits, wear plates, flow-control cartridges, hoses. That transparency matters, because I've dealt with vendors who couldn't produce a parts list, and those relationships ended badly.
(Should mention: a no-name supplier in 2023 sold us a seal kit that didn't match the cylinder. The machine sat for two days while the vendor insisted it "fit all machines." It didn't. That one part cost us more than the part was worth.)
The conclusion on this dimension: for a drill attachment, uptime is the whole ballgame. The purchase price is a one-time event; parts availability is ongoing. I'll pay a reasonable premium for replacement parts that are spec'd to the actual attachment, with part numbers that match the manual. Universal "fits all" parts are a gamble, and I don't gamble with internal customers' deadlines.
The Safety Dimension That Shows Up Later
This one doesn't appear on any spec sheet, but it lands in my inbox when something goes wrong.
Using an impact drill on concrete means vibration exposure, kickback risk, and silica dust. The OSHA respirable crystalline silica standard—29 CFR 1926.1153, effective September 23, 2017—generally requires a dust control measure like a dust shroud connected to a HEPA vacuum, or a water-fed drill, unless an exposure assessment says otherwise. Verify current requirements at osha.gov; I'm summarizing what our safety officer tells our crews.
The hydraulic attachment changes the risk profile. The operator sits in the cab, away from the dust and vibration. But now you've added pinch points, high-pressure hoses, and the chance of striking rebar or buried utilities. The attachment doesn't put silica dust in the operator's face the way a handheld drill does, but you still need to manage chip cleanup, barricading, and a pre-task plan.
The surprise here is that neither tool is "safer" overall. The impact drill physically wears down the worker. The attachment demands a competent operator and some discipline around the machine. As the buyer, I've had to order dust shrouds and vacuums for the drills—and I've had to order equipment-safety training for the attachment approach. Don't skip the job safety analysis just because the tool is bigger.
So Which Do I Order?
The answer isn't "always upgrade to the bigger machine." It's "match the tool to the hole." Here's the decision rule I use now:
- Order the impact drill when the holes are 3/8-inch to 3/4-inch, the concrete is unreinforced, you need a handful of holes, and the schedule has slack. Spend the extra money on a good carbide bit and skip the cheap bit sets.
- Order the hydraulic drill attachment when you're drilling more than a few holes, the holes are large or deep, the concrete has rebar, or you already have a skid steer, mini excavator, backhoe, or bob crane on site. If the machine is already there, the attachment economics get even better.
- When in doubt, ask for the hydraulic flow requirements and the parts list before the PO. A vendor who is proud of their parts breakdown is a vendor who supports the machine after the sale.
And if you're going to run an impact drill today, the basic method that works for us:
- Use hammer-drill mode. Rotary-only won't get you into concrete.
- Start slow with the bit angled, then straighten it as it bites.
- Let the bit cut; leaning on it just glazes the carbide.
- Use a dust shroud or wet method to keep silica out of the air.
The equipment industry split into two camps a long time ago: people who sell tools and people who sell systems. An impact drill is a tool. A drill attachment backed by proper replacement parts support is a system. The question isn't whether the system costs more—it's whether the job justifies it more than the tool does.
I'm glad we finally started treating concrete drilling as a system decision. The crew probably rolled their eyes in 2022 when I asked what outcome we were buying. But that question is still the one I'd hand to anyone else who signs POs: when someone asks for a bigger drill, ask how many holes, how deep, and how many days they have. That's where the real comparison starts.
