RX3648V The Marshal is Ray-Ban's prescription version of the Marshal frame, built with an irregular metal front and 140mm metal arms shaped to match its asymmetric lines. This aftermarket pair follows that same irregular profile, so the arm curves into the hinge the way the factory temple did rather than the simpler bend used on a square or round eyeglass frame. The Marshal name refers to the style line rather than a standard geometric shape, so ordering against the RX3648V code is more reliable than describing the outline.

Irregular-shaped fronts like the Marshal's don't hinge quite like a standard geometric shape, since the curve into the temple isn't uniform from side to side. It's worth checking that both arms sit evenly after fitting, rather than assuming a single irregular-shape arm covers every similarly styled Ray-Ban model. A small gap on one side after fitting is often just the hinge settling in, but it's worth a second look if it doesn't close up after a few days of wear.

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 3648 is broken or scratched, or buy the pair if both need replacing — either way they match the 140mm length exactly.

Is it worth buying new arms instead of a whole new frame?

Replacing both arms on the 3648 costs from €26.95 with free worldwide shipping, far less than a new frame, and it's backed by a 3-year warranty against manufacturing defects on the 140mm hardware itself.

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 Irregular style of the 3648 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.

My hinge feels loose — will new arms fix that, or is it the frame that's worn?

A new 140mm arm includes its own hinge barrel, so if the wobble is coming from worn threading on the arm side of the 3648, replacing it usually restores a snug, tight fold.