Rolex
Day-Date 36 118238-0441— lug 20mm

The Rolex Day-Date 36 reference 118238-0441 has a lug width of 20mm. This measurement is taken between the two lugs at the point where the strap meets the case. The lugs on this model feature a pronounced inward curve, which means replacement straps must have curved ends to ensure a proper, gap-free fit.

For the Day-Date 36 in yellow gold, alligator straps in cognac, bordeaux, or dark chocolate tones offer the most coherent sartorial pairing. Vegetable-tanned calf leather is a versatile everyday alternative that develops a distinctive patina over time. For occasional sporting use, high-quality vulcanised rubber provides water resistance without compromising aesthetics. All replacement straps must be 20mm at the lug with curved ends compatible with the Day-Date case geometry.

To replace the strap on the Day-Date 36, remove the spring bars from the lugs using a fine-tipped spring bar tool. The Day-Date lugs have a notable inward curve, so the replacement strap must have matching curved ends. While the operation can be performed at home with the correct tools, it is advisable to entrust a solid gold case to a professional watchmaker or specialist atelier to avoid scratching the case.

Yes, high-quality aftermarket straps are available for the Rolex Day-Date 36 with a 20mm lug width. The essential requirement is that the strap features curved ends to match the geometry of the Day-Date lugs. Milanostraps.it offers a curated selection of handcrafted straps in leather, rubber and other materials in 20mm, designed to fit this reference correctly, with bespoke customisation available through Casati Milano.

The lifespan of a leather strap depends on the material and conditions of use. A quality alligator strap, worn regularly but kept away from moisture and physical exertion, typically lasts between two and five years before showing significant interior wear. Vegetable-tanned calf leather has a similar lifespan but develops a characteristic patina that many enthusiasts value. Shell cordovan offers the greatest resistance to surface abrasion. Casati Milano provides an 18-month production defect warranty on all bespoke straps.