Square-fronted and molded in plastic, the Ray-Ban RB4264 takes a 145mm temple arm — the length and material this aftermarket pair is cut to. Because the hinge width and screw spacing follow the RB4264 mold specifically, arms sized for a different Ray-Ban model won't align the same way even if the plastic looks identical.

Plastic temples rarely crack along their length; the failure point is almost always the metal hinge insert molded into the tip, where repeated opening and closing eventually loosens the screw thread. A squared frame like this one puts that joint under slightly more torque than a rounded style, since the arm meets the front at a sharper angle. If the front frame and lenses are still sound, replacing just the arms costs a fraction of a new pair.