Strap for GMT-Master II Stainless Steel / LN

The Rolex GMT-Master 116710LN-0001 features a lug width (ansa width) of precisely 20mm. This measurement is strictly standardized by Rolex and represents the distance between the two inner lugs of the case where the strap is inserted. Always verify compatibility by measuring with a calliper before ordering an aftermarket strap.

The choice depends on your primary use case. For formal and travel contexts, alligator leather in vegetable tanning—cognac or dark brown—is ideal: it ages naturally and develops a rich patina. For maximum elegance, shell cordovan in black or cognac is uncompromising. For functionality, a NATO strap in high-density polyamide or vulcanized rubber resists humidity and saltwater. Consult Casati Milano to select the leather and thickness based on your wrist and lifestyle.

The strap is secured by spring bars inserted into the case lugs. Use a dedicated spring bar tool to compress the pin from one side, extract it gently from the lug, and repeat on the opposite side. Next, insert the new strap by aligning its rectangular hole with the spring bar, compress the pin, and fix it into the opposite lug. Never use screwdrivers or improvised tools: you risk scratching the case.

Yes, provided the lug width is exactly 20mm and the spring bars are standard (2.0–2.1mm diameter). Artisanal aftermarket straps—such as those crafted by Casati Milano—are built specifically for this measurement and ensure perfect fit. However, the original Rolex strap remains the reference for finish and precision: a high-quality aftermarket strap compensates with aesthetic appeal and personalization.

A high-quality full-grain leather strap (alligator or calf) lasts 3–5 years of daily wear, provided regular maintenance: avoid prolonged water immersion, protect from saltwater, and occasionally apply colourless cream. Shell cordovan, being denser, can last 7–10 years. A NATO or rubber strap is essentially indefinite—it does not degrade. Casati Milano offers 18 months' warranty against manufacturing defects and can be consulted for extended durability through reconditioning services.