Strap for Railmaster Omega Co-Axial Master Chronometer 40 Stainless Steel / Blue / Bracelet

The Omega Railmaster 220.10.40.20.03.001 has a lug width of 20mm. This measurement, taken between the internal lugs of the case, is an intermediate standard that requires specialized suppliers to ensure compatibility and perfect finishing. All straps proposed on MilanoStraps for this measurement are verified on the original case.

The choice depends on use and desired tone. For maximum aesthetic harmony we recommend an alligator with vegetable tanning in black or tobacco brown, which enhances the timeless character of the instrument. For intense daily use, a satin FKM rubber offers resistance and practicality while maintaining functional simplicity. A cotton NATO evokes the railway DNA of the original model.

The Railmaster strap is replaced by removing the pins (pin bars) that connect the case lugs to the previous strap. Equip yourself with specific tools: 1) a spring bar tool with forked end to lift the pin spring, 2) a case holder to keep the case steady. Insert the fork on one end of the pin, lift slightly until the pin retracts, remove the strap. Repeat on the other side. Reverse the procedure for the new strap, ensuring the pins engage symmetrically in the lugs.

Yes, provided it is verified for dimensional compatibility. MilanoStraps exclusively selects 20mm straps certified, measured and tested. Caution: there are variations in pin thickness among different manufacturers; excessive overflow in the slots can create excessive play. Our suppliers guarantee correct tolerances and case end finishing without scratching the satin case.

A quality leather strap with vegetable tanning and artisanal construction lasts 3-5 years of regular daily use. Durability depends on personal perspiration, environmental humidity and maintenance (avoid prolonged immersion, dry after water contact, periodically hydrate with specific creams). Casati Milano straps benefit from an 18-month warranty against manufacturing defects and premature wear.