No

L=6.35mm

(1/4 inch)

L=12.7mm

(1/2 inch)

L=24.5mm

(1 inch)

Outer Diameter(mm)

Inner Diameter(mm)

Colour

Model

Model

Model

1

14G

14G

14G

1.83

1.52

Dack Green

2

15G

15G

15G

1.65

1.37

Brown

3

18G

18G

18G

1.27

0.84

Green

4

20G

20G

20G

0.91

0.58

Pink

5

21G

21G

21G

0.81

0.51

Purple

6

22G

22G

22G

0.71

0.41

Blue

7

23G

23G

23G

0.64

0.33

Orange

8

25G

25G

25G

0.51

0.25

Red

9

27G

27G

-

0.41

0.2

Clear

10

30G

30G

-

0.30

0.15

Light purple

11

32G

32G

-

0.23

0.1

Yellow