Strap for Rolex GMT-Master 126713GRNR

The Rolex GMT-Master II ref. 126713GRNR features a 20mm lug width. This measurement represents the distance between the two lateral lugs (the protruding parts of the case where the strap is attached). To verify this yourself, measure the internal distance from passant to passant using a digital calliper. Precision in this measurement is essential to ensure a perfect fit with the strap without any vertical play.

The best strap depends on your usage and aesthetic preference. For the yellow Rolesor with green dial, we recommend: 1) Nile alligator in cognac or dark brown — formal choice that develops a golden patina in harmony with the gold; 2) Vegetable-tanned calf leather in honey tone — versatile between office and casual wear; 3) Black rubber with alligator passant — sporty and contemporary option. Milano Straps craftsmen create each strap bespoke to guarantee ergonomic fit and decade-long durability.

The 126713GRNR uses a standard Oyster lug system with fixed lugs and grooved passants. Request your authorised Rolex watchmaker to remove the original strap by extracting the steel spring bars. This operation requires specialist tools (a spring bar remover) and must be performed with care to avoid damage to the case. Once the bars are removed, the new 20mm strap simply inserts into the lugs. If the strap is equipped with a deployant, ensure it has been adjusted for length before installation.

Yes, any strap with a 20mm compatible lug width (measured internally from passant to passant) is technically compatible. However, compatibility does not guarantee craftsmanship quality or longevity. We recommend specialised brands such as Milano Straps, which produce straps with hand-saddle stitching, professional edge-paint finishes and carefully selected leathers. A budget or low-quality strap compromises the experience of an instrument worth 25,000+ euros.

A quality leather strap (alligator, calf, cordovan) typically lasts 5–8 years with daily wear, provided it is properly maintained: avoid prolonged water exposure, direct intense sunlight and aggressive cleaners. Vegetable-tanned leather improves visually over time, developing a natural patina that increases aesthetic value. Milano Straps' straps are crafted with structural thickness (1.4–1.6mm) that guarantees superior resistance compared to industrial straps, extending durability to 10–12 years even under intensive use.