Measurement (L X W): external 2 1/16"(51 mm) X 2 1/16"(51 mm); internal 1 9/16" (40 mm) X 1 1/2" (38 mm)
Fits 1 1/2" (38 mm) wide belts with snap on features. If your belt buckle is stitched on the belt, you may want a shoe maker to help you replace the buckle.