Most cordless drills have a ____ chuck.

• A. keyed
• B. snap-on
• C. adjustable
• D. keyless

Answer: (D)

Bit changes and speed are what matter here. Most cordless drills have a keyless chuck, which lets you tighten or loosen the jaws by hand without needing a separate chuck key. This makes swapping bits quick and easy on the job, increasing efficiency and reducing the chance of losing a key. A keyed chuck, by contrast, requires you to use a small wrench to tighten the jaws, which slows you down and adds one more thing to keep track of. While keyed chucks can sometimes hold exceptionally tight for high-torque tasks, the everyday cordless drill is designed for fast, tool-free operation, so the keyless option is the standard and most practical choice.