Ollech & Wajs
Aviation OW P-101— lug 20mm

The Ollech & Wajs Aviation OW P-101 features a lug width of 20 mm—a specific and unconventional dimension in contemporary watchmaking. This width is essential to the volumetric proportions of the 39.56 mm stainless steel case. Always verify that the selected strap fits perfectly across the lugs without lateral play.

High-grade alligator represents the reference choice: regular grain and natural patina amplify the design's sobriety. Vegetable-tanned calf evolves over time, creating harmony with the case. Woven NATO in dark grey or navy blue offers a contemporary alternative that references aviation heritage. Structured rubber maintains proportional balance whilst avoiding excessive sportiness.

The procedure requires simple tools: a spring bar tool (piston extractor) to release the lateral springs from the lugs. Position yourself in well-lit conditions, extract the old strap by disengaging the pins, insert the new strap aligning it perfectly with the case shoulders, then secure the pins ensuring they are firmly locked. The operation takes 2–3 minutes.

Any strap with a 20 mm lug width is compatible. At milanostraps.it you will find dedicated selections in leather, NATO, and rubber—all verified for precise fit to the lugs. Consult the 20 mm strap collection: every model guarantees exact constructive tolerances.

A quality leather strap, subject to moderate daily use, maintains structural integrity between 2 and 4 years. Vegetable tanning and alligator leather age gracefully, developing patina that extends aesthetic perception beyond the physical limit. Humidity, perspiration and solar exposure accelerate wear; regular maintenance (light conditioning) extends durability.