Strap for Conquest 29.5 Quartz Stainless Steel Double Row Diamond Bezel

The lug width of the Longines Conquest L3.258.0.87.6 is 20mm. This measurement is critical for strap compatibility: it must match precisely the distance between the two spring-bars of the case. A strap too narrow or too wide compromises aesthetics and clasp security. All straps marked 20mm on milanostraps.it are verified for this model.

For the Conquest L3.258.0.87.6 in stainless steel, we recommend alligator (dyed black or burgundy with vegetable tanning) for maximum elegance, or shell cordovan for those who appreciate patina evolution over time. Vegetable-tanned calf offers artisanal quality at a more accessible price point. Those seeking sporty versatility can opt for a NATO fabric strap, easy to swap and suitable for multiple contexts.

Remove the strap by using a spring-bar tool to extract the two spring-bars. Position the tool in the small groove beneath each pin, press downward to release the spring, then extract the old strap. Installing the new one reverses the process: align the lug, insert the pin, and let the spring fix it automatically. If you lack experience, contact Casati Milano for risk-free service.

Yes, all artisanal straps with 20mm lug width are compatible with the Conquest L3.258.0.87.6. On milanostraps.it you'll find a curated selection of alligator, shell cordovan, calf, and rubber straps, customisable in length and stitching details. Each strap is verified to guarantee proper fit and quality.

Durability depends on usage intensity and material type. An alligator or cordovan strap with vegetable tanning, worn daily, typically lasts 3-5 years before requiring replacement. Calf leather, being more delicate, tends toward 2-3 years. Frequent exposure to perspiration and humidity shortens lifespan. Casati Milano offers 18-month warranty on all straps and can renew yours at any time.