Rolex
Datejust 36 116200-0070— lug 20mm

The Rolex Datejust 36 model 116200-0070 features a lug width of exactly 20 millimetres. This is the internal distance between the two attachment pins and is a precise, non-interchangeable specification. Your replacement strap must be constructed to this exact tolerance—it is not compatible with standard 18mm or 22mm lug widths.

The Datejust 36 carries exceptional elegance with intense alligator leather (medium-coarse grain), vegetable-tanned calf, or shell cordovan for absolute longevity. Choice depends on wear pattern: alligator balances sport-formal versatility, calf develops natural patina through daily use, cordovan excels beyond 10 hours daily continuous wear. All options are bespoke-constructed on 20mm lug width with 18-month artisanal warranty.

Strap replacement requires two tools: a small flathead screwdriver and a spring bar removal tool. Locate the lug attachment block, apply gentle downward pressure whilst extracting the pin from below—the strap disengages. Position the pin through the new lug, reinsert from bottom to top until the mechanical click confirms lock. Construction tolerance is critical: a poorly-fitted 20mm lug damages the Rolex pins. We recommend first replacement at a certified watchmaker.

Yes, strictly if constructed to 20mm lug width specification. Many universal straps employ 18mm or 22mm standards, straining the Rolex pin or creating ergonomic slack. Casati Milano constructs every strap to precise 20mm specification with construction tolerance within hundredths of millimetre. Always verify lug width specification with the manufacturer before ordering.

A vegetable-tanned calf strap lasts 18–24 months under daily wear (8–10 hours daily), developing warm tones and natural patina. Shell cordovan surpasses 36–48 months due to construction density and crease resistance. Alligator settles at 24–30 months. These intervals improve significantly if you rotate multiple straps weekly (distributed wear). Casati Milano provides every strap with 18-month warranty against manufacturing defects only, excluding natural leather ageing.