Type/Specifications:
(1) Pen Hold type
(2) Butterfly type

(3)  Y type
(4) With Injection port

Colour Code Guage Ext. Dia. (mm) Length. (mm)
Grey         G-16 1. 7mm   45mm

Green       G-18 1. 3mm   45mm

Pink         G-20 1. 0mm   30mm

Blue         G-22 0.9mm    25mm

Lime         G-24 0. 7mm   20mm