Rolex
Datejust 36 126231-0026— lug 20mm

The lug width of the Datejust 36 reference 126231-0026 is exactly 20 millimetres. This dimension is specific to the 36 mm case proportions and must be strictly observed when selecting aftermarket straps. Always verify with a digital calliper the internal distance between lug attachment points before purchasing a compatible strap.

For the two-tone rose gold and stainless steel configuration of the 126231-0026, we recommend straps in alligator with vegetable tanning, which develops natural patina whilst accentuating the case's chromatic contrast. Alternatively, vegetable-tanned madère leather for more formal contexts, or shell cordovan for those seeking durability and striking patina development. A deployante clasp is highly recommended for daily security and stability.

Strap replacement requires extraction of the spring bars using a precision tool (spring bar tool). Position the watch securely, then gently remove one bar at a time by rotating slightly and pulling outward. Insert the new bar into the compatible 20 mm strap, then secure it in the lugs. If inexperienced, consult an authorised service centre to avoid damaging the case.

Yes, superior-quality aftermarket straps are fully compatible provided they strictly observe the 20 mm lug width specification and employ noble materials and artisanal techniques. Specialist brands such as Casati Milano produce custom straps that match or exceed Rolex's quality standards. Always verify the manufacturer's specifications before purchase.

Leather strap longevity depends on tanning quality, daily wear and maintenance practices. An artisanal alligator strap with vegetable tanning typically lasts 5-8 years under moderate use, developing a desirable patina. Madère calfskin has comparable durability. Shell cordovan, owing to its natural hardness, can last 10+ years. Maintenance includes periodic cleaning, drying after perspiration exposure, and rotation with alternative straps to distribute wear.