Rubber B Rolex Deepsea 22mm x 22mm White Rubber Watch Strap M207 Authentic OEM
The Rubber B reference number is M207. This strap is only compatible with Rolex Sea Dweller 44m models (126660 & 136660). The sizes are 22mm at the lugs, 22mm at the buckle end. The length is 125mm x 80mm.