Steinhart
Marine M0506— lug 20mm

The lug width is 20 millimetres. This width is proportionally correct in relation to the 38 mm case diameter. To verify, measure the gap between the two lugs with a digital calliper: the value must be exactly 20 mm to ensure compatibility with standard straps.

We recommend Tuscan vegetable-tanned leather for daily wear (develops natural patina over time) or aniline calf leather for those preferring immediate softness. For sports use and diving, choose NATO cordura or synthetic rubber. Casati Milano personalises every strap with hand-stitching and steel-engraved buckles.

The process is straightforward: using a spring bar tool (with a forked tip), gently push the spring bar into the upper lug hole to retract it, then remove the old strap. Insert the new strap by snapping the bar into both lugs. If you lack the tool, Casati Milano offers hand-change service.

Yes, provided they are certified for 20 mm lug width. Avoid budget straps with plastic slots or fragile buckles: the Marine deserves noble materials (natural leather, steel) that last years. Casati Milano's artisanal straps guarantee absolute compatibility and bespoke craftsmanship.

A quality artisanal leather strap lasts 5–8 years with moderate use (4–5 days weekly). Vegetable tanning ages better and develops characteristic patina. Prolonged moisture exposure shortens lifespan; synthetic rubber remains unaltered for 8–10 years. Casati Milano recommends drying the strap after saltwater contact.