Strap for Railmaster Omega Co-Axial Master Chronometer 38 / 60th Anniversary

The Omega Railmaster 220.10.38.20.01.002 has a lug width of 19 millimetres. This measurement is specific to the 38mm case and is compatible with all straps certified for 19mm lug widths. Always verify the measurement with a digital calliper, measuring the distance between the two spring bars when the lug is loaded and the strap is removed.

For the Railmaster 220.10.38.20.01.002 we recommend alligator (dark grey or tropical brown) for inherent elegance, vegetable-tanned calf (cognac or tobacco) for a patina that ages beautifully, or shell cordovan (burgundy) for exceptional character. For those wanting to preserve the operational spirit, a NATO in ballistic nylon or FKM rubber remain authentic choices. The choice depends on use: formal-casual requires alligator, robust daily wear favours vegetable-tanned calf.

The strap on the Railmaster 220.10.38.20.01.002 is changed using a simple tool (spring bar tool) to remove or insert the spring bars. Position the watch with the lug shoulder facing upwards, insert the tool into the small lateral hole of the spring bar, apply gentle downward and outward pressure to release the pin, then pull out the lug. Installation is the reverse process. Ensure you do not bend the spring bars and verify that the new strap is at least 12cm long when closed.

All straps with a 19 millimetre lug width are compatible with the Railmaster 220.10.38.20.01.002. It is essential that the strap thickness at the attachment point is between 4.5 and 5.5mm to avoid instability. Milanostraps.it offers a collection of 19mm artisanal straps, customizable in material, length and finishes. For maximum quality and perfect fit, the Casati Milano atelier creates custom straps by appointment, specifically tailored to your wrist.

The lifespan of a leather strap depends on the material and usage. A quality alligator or shell cordovan strap, with daily care, lasts 5–8 years under normal conditions. Vegetable-tanned calf, being more absorbent, requires monthly maintenance (cleaning with a damp cloth) and lasts 4–6 years. A NATO strap in ballistic nylon is virtually indestructible. The Casati Milano artisanal warranty is 18 months, covering manufacturing defects. Remember to dry the strap if exposed to prolonged moisture and avoid direct sunlight to prevent colour fading.