1.50" x 1 1/8" x 18g 14/20 double clad gold fill This is a stamping blank washer. Washer specs are: Outside diameter is approx. 1.50" (approx 38.1mm) Inside diameter is approx. 1 1/8" (approx 28.18mm) 3/16" stamping space (approx 4.77 mm) material thickness - 18 gauge