Wire cores for acetate sunglasses : 

TW-112, one pretty popular wire core model used in acetate and plastic sunglasses temples to make it stronger and more durable, also enable it to be bent to any shape as you like.

Material: high nickel, lead free with nickel color plated,

Size: 3.0mm wide and 130mm length,  with 3.5 round hinge soldered on.

Various of front hinges for options:

90 degree front hinge for straight installing ; 180 degree for side installing,both are for plastic frame, 

 rivet hinges TH-301 are also avaible for option.

For wholesale order: 

MOQ: 1000 pairs are required;

Length: as per your request.

Lead time: 15 days.