Rolex
GMT-Master 116759 SA— lug 20mm

The Rolex GMT-Master 116759 SA features a standard lug width of 20mm. This measurement is taken with a digital calliper positioned internally between the two lugs of the 18-carat white gold case. All aftermarket straps with a 20mm straight-end configuration are compatible with this reference.

For the 116759 SA in white gold, the most suitable materials are hornback alligator in tobacco or slate grey tones, natural shell cordovan, and vegetable-tanned calf leather with a matte finish. For sporting contexts, vulcanised rubber is also a valid option. The choice of buckle — plain or deployant clasp in white gold — significantly affects the overall aesthetic and daily wearing comfort.

Strap replacement requires a fine-tip spring bar tool or a dedicated instrument. Insert the tool into the lug slot, compress the spring bar, and slide out the original strap. The replacement 20mm strap is fitted by hooking one end first, then compressing the spring bar to secure the opposite side. It is advisable to work on a protected surface to avoid scratching the white gold case.

Yes. Any strap with a 20mm lug width and standard spring bars is compatible with the GMT-Master 116759 SA. Milanostraps.it offers a selection of handcrafted straps in leather, rubber and cordovan made specifically for Rolex references with a 20mm lug width, with bespoke customisation options available through the Casati Milano atelier.

The lifespan of a leather strap depends on the material, care and frequency of use. A quality alligator strap, kept away from water and perspiration and treated periodically with appropriate products, maintains its structural and aesthetic integrity for 3 to 5 years. Shell cordovan, due to the density of its fibres, tends to develop a noble patina over time and can last even longer with proper care. The Casati Milano warranty covers 18 months for manufacturing defects.