Strap for Avenger II GMT Stainless Steel / Volcano Black / Calf / Pin

The lug width of the Breitling Avenger A3239011/BC34/105X/A20BA.1 is 22mm. This measurement can be confirmed by placing a millimetre ruler between the case lugs and measuring the internal gap. It is one of the most widely adopted sizes in the sport-luxury segment, ensuring broad compatibility with aftermarket straps.

The ideal choice depends on intended use. For formal or semi-formal occasions, a belly-cut alligator strap paired with a steel deployante clasp offers the most refined finish. For everyday sport use, a vegetable-tanned calfskin strap develops a distinctive patina over time. For intensive or aquatic use, vulcanised rubber or a ballistic nylon NATO strap provide maximum durability and allow for swift strap changes.

The spring bars securing the strap to the lugs are standard 1.8mm diameter. To replace the strap, use a fine-tipped spring bar tool: compress the spring bar inward within the lug hole and slide the strap free. The procedure takes approximately two minutes and does not require an authorised service centre visit.

Yes. The 22mm lug width is widely supported by the aftermarket. Milano Straps offers a curated selection of handcrafted leather, NATO, and rubber straps specifically tested for this size, available online with prompt dispatch. For a bespoke option with direct leather selection, Casati Milano provides a made-to-measure service by appointment at the Milan atelier.

The lifespan of a leather strap depends on tanning quality, frequency of wear, and exposure to perspiration and the elements. A premium vegetable-tanned strap worn regularly but not during intensive sport activities will typically retain structural and aesthetic integrity for 2 to 4 years. Milano Straps offers an 18-month guarantee against manufacturing defects. For high-sweat or outdoor use, vulcanised rubber or NATO straps are the more practical alternative.