Rubber Oyster Flex strap (20mm) Designed Specifically for Rolex GMT Master 2, Model 116710 and 126710 BLNR Perfect curved lug shape to accommodate Rolex case, as pictured. Soft composite high quality rubber material With fitting tool included. Note: This Strap requires use of original Rolex Clasp which can simply be unscrewed swapped over to the new strap. Please contact me if you wish to purchase a clasp. Fast, Tracked and Insured Postage. Please see my other listings and 100% feedback.