Product Name: 21mm Compatible Rubber Strap for Rolex - Black Oysterflex Type C - Submariner, Yacht-Master II, Datejust 41, etc. Brand New, Aftermarket Rubber Strap for Rolex. Compatible with: Submariner (12661* series) Yacht-Master II (11668* series) Datejust 41 (12633* series), etc. Also suitable for other models with a lug (strap) width of 21mm. Color: Black Size: Lug width: 21mm Length: Approximately 85mm / 55mm *The 85mm side can be shortened by cutting the groove. The curved design of the strap provides a comfortable fit on the wrist. For Glide Lock clasp types (Submariner models using two 9mm screws, etc.), please note that the strap will require custom cutting to fit the buckle. *This product includes the strap only. Please note that the watch itself is not included in the example images.