Measurement: external 2" (51 mm) X 1 3/4" (42 mm); internal 1 3/4" (42 mm) X 1 1/4" (30 mm)
Fits any belt 1 1/2" (38 mm) wide with snap on features, not work with stitched on belts. If your belt buckle is stitched on the belt, you may want a shoe maker to help you replace the buckle.