Rolex
Datejust 36 126200-0018— lug 20mm

The lug width of the Rolex Datejust 36 reference 126200-0018 is 20mm. This measurement is taken internally between the two lower lugs of the case, at the strap attachment point, using a precision calliper or millimetre ruler.

For the Datejust 36 126200-0018 in Oystersteel, the most suitable materials are polished alligator for formal settings, vegetable-tanned calf leather for daily wear, and shell cordovan for those seeking durability and developing patina over time. The correct width is 20mm at the lug end, tapering to 16 or 18mm at the keeper.

To replace the strap on a Datejust 36, remove the spring bars from the lugs using a fine-tipped springbar tool, applying gentle pressure in the lateral notch of the lug. Work on a soft surface to protect the case. Original Rolex spring bars have a diameter of 1.8mm.

Yes. Any strap with a 20mm lug-end width is dimensionally compatible with the Datejust 36 126200-0018. Milano Straps and Casati Milano handcrafted straps are made to fit this case, with the lug-end curvature adapted to the Oyster lug profile.

Longevity depends on the material and frequency of wear. A vegetable-tanned calf leather strap used daily has an average lifespan of 1–2 years. Shell cordovan, thanks to the dense fibrous structure of the horse's butt, can last 3–5 years while retaining its shape. Quality alligator, properly maintained and kept away from moisture, often exceeds 4 years.