Strap for Railmaster Omega Co-Axial Master Chronometer Small Seconds 38 Stainless Steel / Beige Gradient

The lug width is 20mm. It is measured from the inner shoulder of one spring bar to the other passing over the case with a digital caliper. This width is specific to the Railmaster and ensures balanced proportions on a medium-to-large wrist.

We recommend black or blue alligator for aesthetic contrast, vegetable-tanned calf for a natural patina that ages elegantly, or burgundy shell cordovan for those who wish to convert the tool watch into a formal timepiece. Technical FKM rubber straps maintain the original railway identity.

Use a spring bar remover tool to remove the elastic bars that attach the strap to the lugs. Insert the thin blade into the slot beneath the bar, gently push upward to release the pin, then slide off the old strap. Install the new strap by first aligning one bar, then the other, until you hear the click of closure.

Yes, all straps with a 20mm lug width are compatible. Verify that the strap lugs are correctly sized to accommodate the pins without play. Online you will find the complete collection of 20mm straps with customization options in sizes, initials, and thread color.

Durability depends on the quality of the tanning and the material. An alligator or vegetable-tanned calf will last 3-5 years with daily wear. Shell cordovan, due to its greater fibrous density, can extend beyond 5 years. The natural patina increases with use, without compromising the structure if properly cared for.