Rolex · Day-Date 36
Strap for Day-Date 36 Everose / Strap / Meteorite
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 118135-0072
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 118135-0072, seen from the bench
Frequently asked questions
What is the exact lug width of the Rolex Day-Date 36 118135-0072?
The lug width (distance between the spring bar mounting holes) of the Rolex Day-Date 36 118135-0072 is precisely 20 millimetres. This technical specification determines compatibility with aftermarket straps: an 18 mm strap will not fit; a 22 mm strap will be loose and unsafe. Accuracy in measuring this dimension is critical when purchasing a replacement strap.
What is the best strap material for the rose gold Day-Date 36?
For the Rolex Day-Date 36 118135-0072 in rose gold, alligator leather is the optimal choice. The natural geometric texture of alligator scales resonates visually with the horizontal finishing on the Rolex dial, whilst deep cognac or dark brown shades amplify the warmth of the rose gold case. Alligator develops a soft patina with age. Vegetable-tanned calf leather offers excellent alternatives in dark finishes (black, chocolate brown, burgundy). Shell cordovan is a legitimate option but requires an initial break-in period. Rubber or fabric materials are inappropriate for this elegant model.
How do I safely change the strap on a Day-Date 36 118135-0072?
Changing the strap on a Rolex Day-Date 36 118135-0072 requires a spring bar tool (a small two-pronged instrument). Procedure: 1) Place the watch on a soft surface with the bracelet facing upward; 2) Insert the tool's prong into the small hole on the spring bar, applying pressure until it retracts laterally; 3) Extract the spring bar from both lugs simultaneously; 4) Repeat for the opposite end; 5) Insert the spring bar into the new strap, ensuring it clicks securely into both mounting holes. If uncertain, consult a professional watchmaker.
Is an aftermarket strap compatible with the Rolex Day-Date 36 118135-0072?
Yes, any strap specifically manufactured for a 20 mm lug width is compatible with the Rolex Day-Date 36 118135-0072. Compatibility is determined by the spring bar dimension, not the strap brand. Select straps from experienced artisans who understand the Day-Date 36 proportions (36 mm diameter, 11.35 mm thickness) and your colour preferences. Casati Milano offers bespoke solutions by appointment with an 18-month warranty on manufacturing defects, or explore milanostraps.it's curated online collection of alligator, calf leather and shell cordovan straps.
How long does a leather strap last on a Day-Date 36 worn daily?
The lifespan of a leather strap on a daily-worn Rolex Day-Date 36 118135-0072 depends on material and care conditions. Alligator, if properly maintained (avoiding prolonged immersion, drying promptly if wet), typically lasts 3–5 years before significant wear at the lugs. Vegetable-tanned calf leather, more compact, can reach 4–6 years. Shell cordovan, if treated with protective wax, offers greater longevity (5–7 years) but requires consistent maintenance. Surface patina does not indicate structural failure; replace the strap when lugs develop visible cracks or the clasp becomes unstable. With proper preventive care, these durations extend considerably.
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

