Rolex
Datejust 41 126331-0004— lug 21mm
Rolex Datejust 41 126331-0004: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 21mm lug width to preserve the original sartorial balance."
Technical Specifications
Rolex 126331-0004The essential strap measurement.
Browse 21mm straps →126331-0004
Rolex caliber 3235 Hours, Minutes, Seconds | Date | Chronometer
The Heritage
Compatible Straps
Selected for the 21mm lug width of the Datejust 41
FAQ
What is the lug width of the Rolex Datejust 41 126331-0004?
The Datejust 41 126331-0004 features a lug width of 21 millimetres. This measurement is determined by the internal distance between the two spring bars on the case. It is essential to verify this tolerance (between 20.8 and 21.2 mm) before selecting an aftermarket strap, as even minor deviations compromise fit and wearing security.
Which strap is most suitable for the Rolex Datejust 41 Rolesor?
For the Datejust 41 Rolesor, dark brown or cognac alligator represents the most elegant choice, enhancing the contrast between rose gold and stainless steel. Wine-coloured shell cordovan develops natural patina over time. For daily wear, vegetable-tanned calf leather ensures durability and develops a soft patina. Each option must feature a deployant clasp sized for the 21 mm lug width.
How do I change the strap on a Rolex Datejust 41 126331-0004?
Strap replacement requires extraction of the spring bars using a specialised tool (spring bar removal tool). Position the watch on a stable support and gently press the bar inward from the underside of the lug. Once the strap is removed, verify that the lugs show no scratches. The new strap must have an exact lug width of 21 millimetres to avoid forcing. If unfamiliar with this procedure, consult a professional watchmaker.
Can I use an aftermarket strap on a Rolex Datejust 41 126331-0004?
Yes, high-quality aftermarket straps are compatible if they meet the 21 millimetre lug width specification. Specialist manufacturers such as Casati Milano produce bespoke straps from certified materials—genuine alligator, shell cordovan, premium calf leather—that deliver longevity and aesthetics comparable to original Rolex straps. The deployant clasp must be properly sized for the 21 mm lug width.
How long does a leather strap last on a Datejust 41?
Leather strap longevity depends on material grade, usage pattern and maintenance. Shell cordovan lasts 10–15 years of daily wear. Premium alligator and calf leather deliver 5–8 years with light use, or 3–5 years with intensive wear. Natural leather gradually thins through contact with skin and moisture. Casati Milano warrants straps for 18 months against manufacturing defects, though periodic replacement is standard practice in luxury watch maintenance.
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 →By appointment only · Milan
The atelier's website: casatimilano.com