20mm Brown Alligator-Style Band Strap w/Clasp replacement for IWC, Tissot Strap is 20mm width at the lug side, 18mm at the clasp side Thick: 3mm-4.5mm (0.125"-0.1875" ) approx. Length: 75mm + 115mm (3.0" + 4.50" ) approx. without buckle Deployment clasp width: 18mm