Rolex · Day-Date 36
Strap for Day-Date 36 Everose Gold / Fluted / Paved-Rainbow / President
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Day-Date 36 128235-0039 (aka: M128235-0039)
Selected for the 20 mm lug width · workshop selection
Matte Dark Gray Alligator Strap€195
Black Alligator Strap with Light Red Edging€149
Vintage Alligator Strap Cognac€195
Hammered Pink Strap with Ecru Stitching€98
Vintage Brown Calfskin Strap — Natural Patina€98
The Day-Date 36 128235-0039 (aka: M128235-0039), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 reference 128235-0039?
The <a href="/pages/termine-glossario/misura-ansa">lug width</a> of the Rolex Day-Date 36 128235-0039 is precisely 20 millimetres. This specification is unique to this model and distinguishes the Day-Date 36 from earlier references, such as the 118235, which featured 20mm lugs with slightly different geometries. Always verify the measurement directly from the case lugs to avoid compatibility errors.
Which strap material is most suitable for a Rolex Day-Date 36 in rose gold?
For a Day-Date 36 in rose gold, we recommend two complementary choices: <a href="/pages/termine-glossario/alligatore">American alligator</a> (Niloticus species) with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> for formal elegance, or Hermès calf leather with hand-finishing for daily versatility. Alligator develops a natural patina over time and exhibits pronounced grain texture. Calf leather ages more rapidly, developing characteristic hazelnut-brown hues. Both materials are compatible with the 20mm <a href="/pages/termine-glossario/misura-ansa">lug width</a> and harmonise with rose gold's warm tonality.
How does one correctly change the lugs on a Rolex Day-Date 36?
The lugs on a Rolex Day-Date 36 128235-0039 are changed using a spring bar tool to compress the integrated pins of the case. Position the tool in the lateral holes, apply consistent linear pressure to compress, then extract the worn lug assembly. The replacement strap must present pass-throughs (the metal cylinders that receive the pins) of correct width—20mm. If unfamiliar with this procedure, entrust the work to a certified watchmaker: rose gold cases require precision to prevent scratches.
Is an aftermarket strap compatible with the Day-Date 36 ref. 128235-0039?
Yes, any strap with a 20mm <a href="/pages/termine-glossario/misura-ansa">lug width</a> is compatible. However, construction quality is paramount: an artisanal strap featuring a bespoke <a href="/pages/termine-glossario/deployante">deployante</a> clasp, double stitching in waxed linen, and naturally vegetable-tanned leather elevates the aesthetic experience of this case significantly. Industrially produced straps often exhibit irregular thickness or imprecise finishing, jarring against Rolex's refinement. Selecting a specialised craftsman ensures gestural compatibility and longevity of the closure system.
How long does a leather strap last on a Rolex Day-Date 36 worn daily?
Durability depends on material, usage, and maintenance. A <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> strap with vegetable tanning endures 4–6 years of moderate wear before the lug thins. Natural nicotated alligator lasts 5–8 years owing to its dense fibrous structure. Common calf leather, 2–3 years. Determining factors include humidity exposure, perspiration, direct sunlight, and cleaning frequency—periodic hygiene extends longevity. A custom-made strap with supplementary leather reserve permits replacement of only the worn portion, significantly extending overall lifespan.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

