Whether you’re a weekend DIYer or a seasoned contractor, having the right set of bits can make or break a project. Drill drivers are incredibly versatile, but only when paired with the correct drill bits and driver bits for the job. Using the wrong bit leads to stripped screws, broken materials, and wasted time.
This guide covers every common type of drill bit and driver bit, what they are designed for, and how to choose the best ones for your drill driver. We’ll also highlight top-rated drill/driver combos and bit sets that deliver excellent performance and value.
Why Bit Selection Matters
Your drill driver is only as good as the bit you put in its chuck. A high-torque drill driver, like the DEWALT 20V Max Cordless Drill Driver Set (DCD771C2), can power through wood, metal, and masonry when equipped with the right accessory. But pairing it with a dull or incorrect bit will cause overheating, poor cuts, and potential injury.
Understanding bit types, shank shapes, and material compatibility ensures you get clean, fast results every time. Let’s break down the most common categories.
Drill Bits: Types and Their Uses
Twist Bits
Twist bits are the most common drill bits. They feature a spiral flute that removes chips as you drill. They work well on wood, plastic, and thin metal. For general household tasks, a set of high-speed steel (HSS) twist bits from 1/16” to 1/2” covers almost everything.
Spade Bits
Also called paddle bits, spade bits have a flat, wide tip with a central point. They bore large holes (1/4” to 1-1/2”) in wood quickly. Use them for running cables or creating holes for door hardware. They leave a rougher edge than forstner bits but are much faster.
Auger Bits
Auger bits are designed for deep, clean holes in wood. Their screw tip pulls the bit into the material, reducing effort. They are ideal for framing, decking, and drilling holes for plumbing pipes.
Masonry Bits
Masonry bits have a carbide tip and a fluted body. They are specifically for brick, concrete, and stone. Your drill driver must be set to hammer mode (if equipped) or you need a hammer drill for best results. Never use a masonry bit on metal or wood.
Hole Saws
Hole saws are cylindrical cups with teeth that cut large-diameter holes. They attach to a mandrel and are perfect for installing door knobs, electrical boxes, or running ductwork. They work on wood, drywall, and thin metal.
Step Bits
Step bits (or unibits) have a conical shape with stepped diameters. They are excellent for drilling into thin materials like sheet metal, plastic, or PVC. One bit can create multiple hole sizes without changing bits.
Driver Bits: Types and Their Uses
Driver bits are used to drive screws and fasteners. The most common drive styles are:
Phillips (#1, #2, #3)
The cross-shaped Phillips drive is ubiquitous. Size #2 is the most common for general construction. Be careful not to cam out – applying too much torque can strip the screw head.
Flathead/Slotted
Flatheads are still found in electrical outlets and some furniture. They require precise alignment and are prone to slipping. Use only when necessary.
Torx (Star)
Torx bits (T15, T20, T25, etc.) are becoming the standard for deck screws and drywall screws. Their six-point star shape reduces cam-out and allows higher torque transfer. Highly recommended for heavy-duty driving.
Hex (Allen)
Hex bits are used for socket cap screws, furniture assembly, and many machine screws. Common sizes: 3/16”, 1/4”, 5/32”.
Square (Robertson)
Square drive bits are popular in Canada and for decking. They provide excellent grip and are less prone to stripping than Phillips.
Nutsetters and Impact Bits
Nutsetters are hex-shaped sockets for driving hex nuts or lag bolts. Impact-rated bits are essential if you use an impact driver – they are hardened to withstand the high torque and percussive force.
Choosing the Right Bits for Your Drill Driver
Most modern drill drivers have a 3/8” or 1/2” keyless chuck that accepts round-shank bits up to that diameter. For impact drivers, you need 1/4” hex-shank bits (quick-change). Many bit sets include both.
When selecting a bit, consider:
- Material: HSS for metal, carbide for masonry, bi-metal for hole saws.
- Shank type: Round for drills, hex for impacts.
- Coating: Titanium or black oxide for longer life.
- Length: Standard (2-4”) for most jobs; extended (6”+) for deep holes.
For maximum versatility, a quality combo kit like the DEWALT 20V MAX Cordless Drill and Impact Driver Combo Kit (DCK240C2) gives you both a drill driver and an impact driver, so you can use any bit type efficiently.
Recommended Drill Drivers and Bit Kits
To help you build the ultimate bit arsenal, here are top-rated products that pair perfectly with any drill driver. Each is hyperlinked for easy purchase.
| Product | Image | Key Features | Price | Rating | Buy Now |
|---|---|---|---|---|---|
| DEWALT 20V Max Drill Driver Set (DCD771C2) |  |
2-speed, high performance motor, 2 XR 1.3Ah batteries | $89.10 | 4.8 ★ | Buy at Amazon |
| DEWALT 20V MAX Drill + Impact Combo (DCK240C2) |  |
2-tool kit, 2 batteries, charger, bag | $149.00 | 4.7 ★ | Buy at Amazon |
| CRAFTSMAN V20 MAX Drill & Impact Set (CMCK200C2) |  |
2-tool set, LED light, 2 bits, bag | $99.00 | 4.8 ★ | Buy at Amazon |
| WORX WX177L.2 Cordless Drill 20V (85-bit kit) |  |
Brushless motor, 2-in-1 design, 85 bits included | $118.92 | 4.8 ★ | Buy at Amazon |
| DEWALT Screwdriver Bit Set 45-Piece (DW2166) |  |
Tough case, Phillips, Torx, hex, square | $14.99 | 4.8 ★ | Buy at Amazon |
For budget-conscious buyers, the PULITUO 20V Cordless Drill/Driver (Green) at $35.99 is a solid entry-level choice with 30 Nm torque and a 21+1 clutch setting. It works well with standard 3/8” shank bits and includes a battery and charger.
If you need a complete set to start drilling immediately, the COMOWARE 20V Cordless Drill comes with 34 power/driver bits and a dedicated charger – all for $31.99. It’s a fantastic value for light-duty home use.
Optimizing Your Bit Storage and Accuracy
Using the right bit is only half the battle. Proper storage prevents loss and damage. Consider investing in a magnetic bit holder or organizer. For more tips, read our guide on Essential Drill Driver Accessories That Improve Accuracy, Storage, and Speed.
Also, remember that battery compatibility affects performance. Learn what works with your tools in Drill Driver Battery Compatibility Explained: What Fits and What Does Not.
Final Thoughts
Mastering drill bits and driver bits transforms your drill driver from a simple hole-maker into a precision fastening machine. Whether you’re drilling pilot holes for furniture or driving dozens of deck screws, choosing the correct bit saves time, material, and frustration.
Start with a quality drill/driver combo like the DEWALT DCK277D2 Brushless 2-Tool Kit (4.8 stars, $152.10) and complement it with a versatile bit set like the DEWALT DW2166. Then, stock up on specific bits for your most common materials. Your drill driver will thank you.