Titanium eyeglass nose pad arms:
These pad arms are made of titanium or beta titanium.
They could be devided into models for metal frames and others for plastic,acetate,aluminum and wood frames etc.
For metal frames, specially for titanium spectacles, they are usually installed by solder-on, such as TP-21 to TP-24;
While for plastic,acetate,aluminum or wood frames for any of which there's problem for solder-on, they will be installed by heat-inserting, such as TP-28 to TP-32 models ; or screw-on, such as TP-35 etc.
Kindly note siicone nose pads and screws are available for matching if you need them together for all models below.