The item for sale is a brand new strap made of the finest Italian pattern Calf leather with deployment clasp in Blue color. It is made for Rolex Date Datejust Submariner Gmt I II Daytona Explorer Thunderbird Yachtmaster watches which has 20mm lugs.This Strap is made of genuine premium Italian Quality leather with decor, same color thread stitching and thick 4mm padding for nice look. It will fit up to an 8 inch wrist. Deployment clasp is made of 316L stainless steel. It will fit watch with 20mm at lugs with 18mm at the buckle. Length: Long part: 115mm Short part: 75mm Thickness of Strap:At the Lugs: 4mmAt the Buckle: 2mmYou get complete sets of genuine leather strap with deployment clasp and it comes with 2 free spring bars. Available in 17mm, 18mm, 19mm, 20mm, 21mm, 22mm , 23mm and 24mm in black, light blue, blue, dark blue, navy, grey, orange, tan, light brown and dark brown color and they are listed in our store for you to buy.All Customers Please Note: Be sure to check your watch model number and the lug width opening using the mm side of a ruler and make sure it matches the lug width mentioned in the description of our listing. If it does not, please email us so we can assist you further. All Customers Please Read The Following Before Purchasing: Be sure to check our detailed measurement guide below or in the photos/images section of the listing to assist you with purchasing the correct parts for your watch. The guide will show you how to measure the lug width opening of your watch using a ruler, how to check your model number, and assist you with other questions you may have regarding measurement. Many watches appear the same but may be different in case size or year model. This will help to avoid any returns or exchanges. Thank you for your business!