Rolex
Datejust 31 178158-0057— lug 16mm

The Rolex Datejust 31 reference 178158-0057 has a lug width of 16mm. This measurement refers to the internal distance between the two lugs at the strap attachment point and determines compatibility with any aftermarket strap. For a precise fit, the strap should feature curved ends to match the specific lug geometry of Rolex cases.

For an 18-carat yellow gold case such as that of the 178158-0057, a vegetable-tanned Porosus alligator strap represents the most coherent choice with the watch's aesthetic register. The scale grain complements the Fluted bezel's texture. Alternatively, box-calf leather offers daily versatility, whilst shell cordovan develops a natural patina over time. A deployant clasp in gold or brushed steel completes the pairing with technical elegance.

Replacing the strap on the Datejust 31 requires a spring bar tool to release the bars connecting the strap to the lugs. It is advisable to work on a soft surface to protect the yellow gold case from scratches. Alternatively, Casati Milano offers an in-atelier fitting service by appointment, with specific care for precious metal surfaces.

Yes. Any strap with a 16mm attachment width and curved ends compatible with Rolex lugs can be fitted to the Datejust 31. Milanostraps.it offers a selection of handcrafted 16mm straps made from selected leathers with steel or gold buckles, specifically designed to fit the Rolex lug geometry without lateral play.

The lifespan of a leather strap depends on the material and maintenance routine. A vegetable-tanned alligator strap, with moderate daily use and proper rotation, maintains its structural and aesthetic integrity for 3 to 5 years. Shell cordovan, due to its dense fibre structure, tends to last longer whilst developing a distinctive patina. Casati Milano provides an 18-month guarantee against manufacturing defects on all straps.