Strap for Day-Date 36 Platinum Diamonds / President / MOP

The lug width of the Rolex Day-Date 36 118346-0038 is 20 mm. This dimension is specific to the 36 mm case diameter and represents the internal distance between the spring bar pins. Accurate measurement is critical before ordering a replacement strap, as millimetre tolerances directly affect comfort and wear security.

Alligator leather is the optimal choice: its fine grain and cartilaginous texture mirror the subtle reflections of the case's satin-finished platinum. Shell cordovan offers a premium alternative with natural patina evolving toward burgundy tones over time. Vegetable-tanned calf leather provides immediate softness and elegant ageing. Natural rubber is an intelligent summer solution, maintaining movement precision without moisture absorption.

The strap is changed by removing the case's lateral spring bar pins using a dedicated tool (spring bar tool). The pins on reference 118346-0038 are Rolex standard-sized, compatible with the 20 mm lug width. We recommend entrusting this operation to a professional to avoid scratching the platinum case. Casati Milano offers professional fitting service by appointment at its Milan atelier.

A high-quality artisan strap, produced by experienced craftspeople with meticulous material selection, is entirely reliable. Compatibility with the 20 mm lug width ensures smooth passage without excessive play. A Casati Milano strap, handcrafted following Haute Couture standards, preserves the structural integrity of the platinum case and ensures wrist stability for decades, backed by an 18-month manufacturing defect warranty.

Durability depends on material and intensity of use. High-quality alligator strap lasts 5-8 years with daily wear, developing natural patina that enhances its appeal. Shell cordovan resists longer, 7-10 years, thanks to the compact density of equine hair leather. Vegetable-tanned calf requires greater maintenance but offers predictable ageing. Natural rubber exceeds 8-10 years if protected from prolonged UV exposure. Periodic maintenance with specific creams significantly extends strap lifespan.