Rolex
Datejust 36 126231-0041— lug 20mm

The lug width (ansa) of the Rolex Datejust 36 126231-0041 is 20 millimetres. This specification corresponds to the distance between the case lugs and is essential to ensure correct visual compatibility. A strap of different width would result in gaps at the case flanks or excess leather, compromising the designed proportions.

For a two-tone rose gold and stainless steel case, we recommend genuine alligator leather with uniform scale grain for formal elegance, or shell cordovan in cognac or rich brown for natural warmth and patina development over time. Vegetable-tanned calf leather represents a balanced choice: it ages by developing individual patina and complements the metals with understated sophistication. For daily versatility, a textile NATO strap or vulcanised FKM rubber with titanium deployante offer practicality without aesthetic compromise.

The strap is replaced by removing the spring bars connecting the strap to the case lugs. Use a dedicated tool to slightly expand the spring bar and extract the old strap, then seat the new one. Note: the Datejust 36 requires 20mm-width straps exclusively. We recommend entrusting this operation to a qualified watchmaker if unfamiliar with the procedure, as spring bars can be damaged if twisted incorrectly.

Yes. A hand-crafted leather strap manufactured to correct technical specifications (20mm lug width, terminal compatible with the case) is entirely compatible. Specialist makers such as Casati Milano create bespoke straps for this model, guaranteeing material quality and artisanal construction. A certified aftermarket strap often exceeds Rolex's original offering in personalisation and leather durability.

A quality leather strap, under regular use, has an expected lifespan of 3–7 years. Critical variables include frequency of wear, moisture and perspiration exposure, tanning quality, and leather type (shell cordovan typically outlasts basic alligator). Vegetable-tanned leather tends to develop pleasant patina and remains visually appealing beyond 7 years. Casati Milano's 18-month warranty covers manufacturing defects; replacement is simple and economical relative to the watch's value.