Generally speaking, in addition to the difference in price and manufacturing process, single and double core nose bridge wire have different product characteristics. Masks with different requirements usually choose different sizes and single core nose wire and double core nose wire.
Nose bridge wire above 5mm will use the double-core process. Because the material is too wide, if a single-core is used, the material cannot have a good shaping effect. Therefore, in the same specification, the shaping effect of the double-core is better than that of the single-core. The price is also higher than the single core, usually according to different uses, 3mm single core nose bridge wire can also satisfy the use of general conventional masks, and can also have a good shaping effect, So the most important thing is to use suitable nose bridge wire.