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

The lug width of the Breitling Avenger A1337111/BC29/439X/A20BA.1 is 24mm. This is a non-standard size, typical of tactical and aviator Breitling models. To verify compatibility, measure the distance between the two metal lugs on the case using a digital calliper. Aftermarket straps must be exactly 24mm wide to ensure proper fit.

For this tactical chronograph, we recommend three options: alligator in brown or black tones for formal elegance, vegetable-tanned calf leather in tobacco or dark brown for sophistication with developing patina, or NATO in grey or black polyamide to maintain operational authenticity. Your choice depends on intended use: formal with fine leather, daily tactical wear with NATO. Tropic rubber is ideal for extreme environments.

Strap removal is accomplished via extracting the spring bars from the lugs. Use a dedicated spring bar tool to gently compress the bar and remove it from the lug attachments. Insert the new strap by aligning the spring bars with the lugs and verify secure seating. If unfamiliar with this procedure, consult a professional watchmaker: incorrect pressure may damage the case. Milanostraps offers installation assistance by appointment at Casati Milano.

Yes, quality aftermarket straps with precise 24mm lug width are fully compatible. Always verify that width measures exactly 24mm and spring bars are stainless steel. Avoid budget straps with poor construction tolerances: material quality and stitching integrity reward investment over time. Milanostraps supplies bespoke artisanal straps crafted specifically for this case, with customisable leather selection, colours, and thread.

A quality leather strap, featuring vegetable tanning or alligator hide, typically lasts 4–6 years with daily wear, accounting for perspiration, mechanical stress, and natural lug wear. Lifespan increases if you rotate multiple straps or limit use to formal occasions. Patina developed over years adds aesthetic value. Rubber or NATO straps resist degradation for 8–10 years. Casati Milano provides 18-month warranty on bespoke straps and technical support to extend longevity.