Rolex
Datejust 36 126234-0014— lug 20mm

The lug width (ansa measurement) of the Rolex Datejust 36 ref. 126234-0014 is 20 millimetres. This dimension is critical when selecting an aftermarket strap: incorrect measurement would result in constructive incompatibility and safety risks during wear. To measure the lugs accurately, position a digital calliper between the two lugs at their internal points, measuring from centre to centre.

Alligator niloticus in dark brown (cognac tone) represents the most balanced choice for the Datejust 36 two-tone: the geometric grain mirrors the constructive precision of the case and the warm tonality dialogues perfectly with white gold without appearing excessively formal. Alternatively, vegetable-tanned calf leather offers visible aging dynamics that transform the strap into a personal signature of wear.

Changing the strap on a Rolex Datejust requires a quality spring bar tool: insert the horizontal tool gently into the access hole beneath the lug, exerting calibrated pressure to release the retention spring. Lift the original strap and insert the new one, ensuring the bar ends seat perfectly in the lateral apertures of the case. For maximum precision, this operation is best entrusted to a certified watchmaker or Casati Milano atelier.

Yes, any strap with a 20mm lug width is constructively compatible with the Datejust 36 126234-0014. Constructive compatibility does not necessarily imply aesthetic quality: premium leather straps—alligator, calf, shell cordovan—maintain the visual proportions of the case and amplify the constructive excellence of the Rolex 3235 movement. At Casati Milano you can personally select the leather and follow every stage of production.

The durability of a leather strap depends on material quality, frequency of wear and conservation practices. An alligator or premium calf leather, under daily wear, guarantees visible but controlled patina over approximately 4-6 years; vegetable-tanned calf manifests accelerated patina within 18-24 months. Casati Milano provides an 18-month warranty on manufacturing defects and recommends periodic treatment with natural waxes to preserve fibre elasticity and luminosity.