This OEM style Stainless Steel Buckle clasp available for your 16mm width leather or rubber watch strap for Rolex Submariner, Gmt, Daytona, Explorer and Yachtmaster . Buckle width: 16mm Small Opening: 9mm Total Length with Buckle Closed 170mm ( Adjustable to 155mm ) It will fit the following model: Submariner 16800 GMT 16713 Yachtmaster 16623 Datejust 16233 Daytona 16523 and others. You can you use it on all Daytona leather strap, rubber strap and Oyster steel band. -Free set of matching spring bars included. If you have any questions, please contact us and we will solve it immediately.