Rolex
GMT-Master 16750— lug 20mm

The Rolex GMT-Master 16750 has a lug width of 20mm, measured internally between the two lugs at the case. This is standard across the GMT-Master line of that generation and should be verified with a digital calliper before purchasing an aftermarket strap.

The choice depends on intended use and aesthetic. Vegetable-tanned alligator leather is the most refined option for formal settings, while box-grain calf offers everyday versatility. Shell cordovan develops a distinguished patina over time. For sport or water-adjacent use, vulcanised rubber is the most technically appropriate choice. A nylon NATO strap references the model's aeronautical origins.

To replace the strap on the 16750, you will need a spring bar tool with a 1.8mm tip. The original Rolex spring bars are standard diameter and are removed by compressing the spring-loaded ends with the tool. It is advisable to work on a soft surface to protect the case and lugs from scratches.

Yes. Any strap with a 20mm attachment width and standard spring bars is technically compatible with the GMT-Master 16750. It is essential that the attachment width is precisely 20mm and that the spring bar length matches the internal lug distance. milanostraps.it offers a curated selection of compatible 20mm straps in various materials.

Longevity depends on the material and conditions of use. A quality vegetable-tanned alligator strap, worn carefully and kept away from prolonged water or sweat exposure, typically lasts between two and four years before requiring replacement. Shell cordovan, due to its dense fibre structure, tends to last longer. Casati Milano straps carry an 18-month guarantee against manufacturing defects.