What Is The Meaning Of G in Puncture Needle Model

G is Birmingham BWG wire gauge specification. The bigger the G, the thinner it gets

The specifications of the puncture needle are: 27G, the outer diameter of the needle tube is 0.40mm, gray;

26G 0.45mm, coffee color;

25G 0.50mm, Orange;

24G 0.55mm, purple;

23G 0.60mm, dark blue;

22G 0.70mm, black;

21G 0.80mm, dark green;

20G 0.90mm, yellow;

19G 1.00mm, milky white;

18G 1.20mm, pink;

17G 1.40mm, purplish red;

16G 1.60mm, white.

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