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As we knew, traditional needle is too thin and slip to grip it. The non-slip pin is designed for easy gripping. There are two features to improve stitching efficiency.
1. There are two shapes of sections on the needle, the middle section is rectangle can make it easier to grip by fingers.
2. The middle part of material is rubber, it provide non-slip function.
Lee,Yin-Kai Lai,Chih-Wei Wang, Szu-Hsin Huang, Yu-Chang