7 joints hidden hinge for acetate eyeglass TH-70

TH-70 7.0*90 round
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Please note the price includes one pair of hinge instead of one piece,thanks!

This hinge is made of high nickel,with nickel color plated.

7.0mm width with 7 jointes hinges with 90 degree,very strong hinge for acetate sunglasses,it's round end and the front hinge should be melted into frames front  straightly.

Mostly used on top grade plastic eyewear and acetate sunglasses.

Installing way: melted into plastic frames by heat.

drawings of hidden hinge TH-70:

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