The Colonel is Ray-Ban's rectangular take on a classic pilot-style metal frame, and the RB3560 version runs a 140mm arm — the length and metal build this compatible pair matches. Its rectangular hinge mount sits differently from the round-front models in Ray-Ban's metal range, so an arm built for those won't seat the same way here even at an identical 140mm length.

Rectangular metal frames with a pronounced bridge detail, like the Colonel, tend to put a bit more leverage through the hinge each time the arm swings open, simply because the front is heavier than a plain round or oval shape. Over enough cycles that shows up as a hinge that no longer holds its angle firmly, well before the arm itself bends or the metal finish wears through. That's the point at which replacing the arm makes more sense than repeated tightening.

Frequently asked questions

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 3560, mismatches are rare, but you're covered by a 14-day return window if the 140mm arms don't align with your hinge.

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 3560 is broken or scratched, or buy the pair if both need replacing — either way they match the 140mm length exactly.

Do I need a specific screwdriver to attach these myself?

You'll need a small eyeglass screwdriver, typically included in basic repair kits, to remove the old hinge screw and attach the new 140mm arm to your 3560 frame — the whole swap usually takes under five minutes.

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 3560, replacing it usually restores a snug, tight fold.