A crisp wax casting, not polished, this steel rear sight has an extra long base that may be trimmed to fit an over-sized dovetail, up to 1" length. The sight blade tilt minimizes mirage and glare. Made in the U. S. A., the dovetail is 1" long by .580" wide. Dovetail to a depth of .050". Height from the bottom of the dovetail to the top of the sight notch is 0.35".