What length brad nails should an 18-gauge nailer handle?

Most 18-gauge brad nailers in this roundup drive nails from 5/8 inch up to 2 inches, with some pneumatic models reaching 2-1/8 inches. For baseboard, casing, and cabinet trim, the common 2-inch ceiling is generally sufficient. Reviewers note that driving longer brads fully into hardwoods like oak is where cheaper guns tend to struggle.