Standard style: suitable for Rolex fit for Rolex Yacht-Master 40mm,Daytona,Submariner 40mm,GMT-Master 40mm,Sea Dweller 40mm,Air-King 40mm,datejust 36mm,Day-Date 36mm/40mm,Cellini 39, Explorer 39mm/40mm,Milgauss 40mm,Oyster Perpetual 39mm,1908, not fit Sky Dweller.This Watchband is also fit for other brands of watches with a 20mm lug width, such as TUDOR,IWC,Longines ,Omega/Seiko/CITIZEN, etc High quality: Made of high -quality fluorine rubber, three times softer than ordinary rubber, flexible and durable, waterproof and sweat -proof. The maintenance-free stainless steel buckle is corrosion-resistant, durable, fashionable and skin-friendly. Craftsmen carefully hand-made, only need to change the strap, the watch is as good as new. The total length of the strap is 7" (not including the size of your watch), and it is adjustable between 5.6" and 7". So you can judge whether it fits by the size of the dial and the length of the strap. Easy to install-the integrated quick-release spring lever allows you to quickly change the strap. We provide auxiliary tools for installing watch straps to meet your needs. The package includes-1* strap replacement + 1* strap removal tool + 3* quick release spring lever + strap outer packaging. Using the included replacement tool, you can quickly install the strap. High quality: soft, waterproof natural rubber strap. The maintenance-free stainless steel buckle is corrosion-resistant, durable, fashionable and skin-friendly. Craftsmen carefully hand-made, only need to change the strap, the watch is as good as new.