Strap for Submariner No-Date 41 / Stainless Steel / Black / Cerachrom

The lug width of the Rolex Submariner 124060-0001 is precisely 21 millimetres. This dimension refers to the external width between the shoulders of the lugs that connect the strap to the case. It is critical to respect this measurement to ensure proper fitting and structural stability of the strap. Do not confuse lug width with the width of the strap at the wrist, which may vary.

There is no absolute 'best' choice, only motivated decisions based on usage and aesthetic preference. Black alligator offers formal elegance with natural texture. Burgundy shell cordovan develops a unique patina over time and resists moisture naturally. For authentic sportiness, vulcanised black rubber maintains the original diving heritage. Vegetable-tanned calf represents the compromise between sustainability and longevity. Each choice transforms the tactile identity of the watch.

The process requires two tools: a specialised spring bar remover or a delicate pincer. Locate the 21-millimetre lugs at both ends of the case. Insert the spring bar tool into the lateral slots of the lug, apply gentle pressure to release the internal spring and extract the lug from the case. Repeat on the other end. Insert the lugs into the new strap by clicking the spring into position, verifying that the strap is perfectly aligned. If unsure, Casati Milano offers strap-changing services at the atelier.

Yes, provided they respect the 21-millimetre lug width. High-quality artisanal aftermarket straps (such as those from Casati Milano) are completely compatible and often offer materials superior to original Rolex straps, with possibilities for aesthetic and constructive customisation. Compatibility depends exclusively on correct lug width, not on the strap manufacturer.

Durability depends on material and treatment. High-quality alligator guarantees 3–5 years of intense daily use. Shell cordovan, thanks to natural resistance, extends to 4–6 years. Vegetable-tanned calf reaches 3–4 years. Critical factors are: ambient humidity, direct sun exposure, frequency of changes and maintenance with natural balms. Casati Milano provides an 18-month warranty against manufacturing defects, regardless of material chosen.