Rolex
Datejust 36 126201-0026— lug 20mm

The lug width of the Datejust 36 reference 126201-0026 is precisely 20 millimetres. This measurement represents the internal distance between the two lugs on the horizontal axis and must be respected rigorously when selecting an aftermarket strap. A dimensionally incompatible strap will alter aesthetic proportions and introduce abnormal play in the strap-changing mechanism.

For the 126201-0026 bi-metal in rose gold and stainless steel, alligator leather in vegetable tanning represents the choice of maximum elegance: the regular grain contrasts the mirror finish of the gold, whilst natural patina evolves over time toward deeper tones. Alternatively, vitello shell cordovan offers compact texture and vertical grain, with bolder tonal dialogue. Deep brown guarantees formal proportionality, whilst aged cognac creates chromatic cohesion with the warm tones of rose gold.

The Datejust 36 utilises an integrated non-screwed lug system. To remove the original strap, identify the spring bars (pins) that connect the strap to the lugs. Using a precision small tool (spring bar tool), push the pin downward to release it from its seat, allowing strap removal. Installation of the aftermarket strap requires the reverse procedure: the pin must be repositioned in the lug holes with uniform pressure. If uncertain, entrust the operation to a certified professional.

Yes, a 20-millimetre aftermarket strap is mechanically compatible with the 126201-0026. However, technical compatibility does not automatically guarantee aesthetic harmony. The quality of leather, finish, patina and colour choice must dialogue with the bi-metal case and champagne dial. A 22mm strap, although it may physically adapt, would alter proportions and potentially cause anomalous movement in the strap-changing system. Always adhere to 20mm.

The lifespan of a leather strap depends on frequency of wear, climatic conditions, sun exposure and tanning quality. An artisanal-quality alligator or vitello strap, worn daily, has useful life of 4–6 years before requiring replacement due to natural wear. Humid environments accelerate deterioration. Vegetable tanning, though more chemically delicate than synthetic tannings, offers natural ageing and fibre compaction that extends functionality. Casati Milano straps include an 18-month warranty against manufacturing defects, independent of wear from normal use.