Rolex
Datejust 36 116231-0100— lug 20mm

The lug width of the Datejust 36 116231-0100 is precisely 20 millimetres. This is the centre-to-centre distance between the two lugs where any compatible strap is inserted. Correct measurement is essential: a 19mm strap will be loose, whilst a 21mm strap will not close smoothly.

For the Everose-and-steel two-tone, natural alligator (honey or chocolate tones) amplifies formality through its irregular grain. For daily versatility, vegetable-tanned calf in dark brown or black maintains luxury and practicality. For sports use, black rubber straps with tessellated texture offer cushioning and sweat resistance.

You must remove the spring bars (the two small metal cylinders that attach the strap to the lugs). Use a dedicated spring bar tool to compress the internal spring and slide out the bar. Never force with a screwdriver—this will scratch the lugs. Once removed, align the new strap holes with the bars and compress until you hear the click.

Yes, provided it is certified for 20mm lug width. Many artisanal manufacturers produce custom straps with tolerances identical to original Rolex specifications. The advantage: access to rare leathers (alligator, shell cordovan), personalised finishes, and production defect warranties up to 18 months.

A naturally-tanned alligator strap with vegetable tanning and linen thread stitching lasts 3–5 years with daily wear and maintenance (regular cleaning, protection from extreme humidity). Vegetable-tanned calf straps last 2–4 years. Rubber lasts 4–7 years. Longevity depends on climate, frequency of wear, and build quality of adhesive and stitching.