iStrap Stainless Steel Butterfly Deployant Buckle Double Push Spring Pin Buckle Watchband Clasp Color & Width (16mm,18mm,20mm 22mm) Made of 316L solid stainless steel Size: 20mm Polished finish Butterfly deployant clasp, would snap open when pressing the 2 buttons General style, can fit most watch straps as thick as 3.5mm You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!