AnchorFlex™ End-Link
Integrated look. Everyday simplicity.
Fits the Omega Speedmaster Professional Moonwatch 42mm with 20mm lugs. Machined 316L end links, spring bars, and our Anchor tang buckle included.
A case-hugging profile with the simplicity of a traditional buckle. Developed on the Moonwatch sapphire sandwich, the included end links sit flush against the Speedmaster's case, so the strap follows the same lines as the original bracelet.
Check your watch before ordering
This fitment depends on the exact Speedmaster you own, not just the name on the dial.
- Fits the Speedmaster Professional Moonwatch 42mm, calibre 1861 and 3861, in hesalite and sapphire sandwich versions
- Does not fit the Speedmaster '57
- Does not fit Speedmaster Racing models
- Does not fit the Dark Side of the Moon or other ceramic Speedmasters
- Does not fit the Speedmaster 38mm or Speedmaster Reduced
- Does not fit the calibre 321 Moonwatch (39.7mm case)
The Flagship rubber, shaped for an integrated fit
This is the AnchorFlex Flagship you already know, cut to sit flush against the case. No clasp mechanism, no extra hardware. It's just the strap, the end links, and our Anchor tang buckle.
Your fit, right out of the box
There's no size to choose at checkout. Every strap ships with three pieces: one buckle end and two hole ends. Use the hole end that fits your wrist.
Why FKM
FKM fluoroelastomer is what we build every AnchorFlex strap from, and it's why they last:
- Holds up to UV, heat, and chemicals
- Won't crack, fade, or go brittle with age
- Soft and pliable against the wrist, but structured enough to keep its shape
- No sagging or collapse the way cheap rubber does
Flagship profile
- Clean modern lines with a subtle taper
- Substantial enough for daily wear, refined enough to dress up
- Built to complement a tool watch, not overpower it
It's the strap you leave on.
Specifications
| Material | AnchorFlex FKM rubber |
| Buckle | Anchor tang buckle, 316L stainless steel |
| Attachment | Machined 316L end links and spring bars included |
| Length | 3-piece: two hole ends (100mm / 120mm), 80mm buckle end |
| Fits | Wrists 5.25″–8″ |
| Profile | Slim and flexible for all-day wear |
FAQs
Some end-link installs can feel tight at first because the thickness rubber strap at the end-link is maximized to ensure durability. There are a few ways to get it installed:
First, try gently wiggling and pushing the spring bar through until the spring bar pops into the opposite side of the end link. This can require some effort.
You can also squeeze the rubber portion of the strap into the end link between your thumb and index finger while pushing the spring bar into place. This helps compress the rubber slightly and gives the spring bar more room to seat properly.
If those techniques do not work, our premium 1.7mm spring bars can be used as an alternative. There is no downside to using them, but we recommend trying the first two installation methods first since the standard spring bars usually work once everything is seated correctly.
If you still have trouble, contact us and we can help troubleshoot the install.
AnchorFLEX™ straps are made from premium FKM rubber and have been third-party tested to be free of harmful fluorinated “forever chemicals” within the scope of the testing performed. We do not intentionally add PFAS-based coatings, surface treatments, or chemical finishes to our straps. Because FKM is a fluorinated rubber, we avoid vague blanket claims and clearly disclose the material. Customers who prefer to avoid fluorinated rubber entirely may prefer our nylon, sailcloth, leather, or other non-FKM strap options.
