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Big-pinhole Needle / Commodity

Big-pinhole Needle
Big-pinhole Needle

The traditional front pinhole is as small as the back one, and the line is difficult to penetrate. The overall thickness changes little .It is easier to thread a needle passing the hole. You should just put the line into the big hole,the line will soon be pulled out of the small hole.

University

Zhejiang University

Zhejiang University
Hangzhou, China

Design

Zhejiang University

Zhejiang University
Hangzhou, China