The 'N' in RB3447N usually marks a small finish or colour update to the base 3447 Round Metal shape, not a change in arm length or hinge — both stay at 145mm and metal. This aftermarket pair follows that unchanged spec, so it fits the 3447N the same way a correctly sized arm fits the base 3447.

Round metal arms like this one tend to fail at the pivot before anywhere else — a loose screw first, then eventually a hinge that won't hold its angle at all. Because the round front offers a narrower mounting surface than a square one, there's less metal at that joint to begin with, which is part of why it's usually the first thing to go. Replacing the arm resets that joint without touching the front frame.

Frequently asked questions

Can I replace just one arm, or do I have to buy both?

You can order a single side if only one arm on your 3447 is broken or scratched, or buy the pair if both need replacing — either way they match the 145mm length exactly.

What material are the arms made from, and will the color match my frame?

The arms are molded in an acetate or metal finish that matches the Redondo style of the 3447 closely, though very slight shade variation is possible since they're independently produced as separate aftermarket parts rather than cut from the same batch as the frame.

What if the arms arrive and the hinge doesn't line up with my frame?

Because each pair is listed against a specific model, in this case the 3447, mismatches are rare, but you're covered by a 14-day return window if the 145mm arms don't align with your hinge.

Are these official Ray-Ban replacement parts?

These are compatible aftermarket arms, independently produced to match the 3447's hinge and 145mm length. They aren't manufactured or supplied by Ray-Ban, just built to the same measurements so they attach correctly.