1 it is made of pp and plastic 2 it is convernient use 3 it is convernient use

blunk needles/dispensing needles(18G)

Helix Plastic Pad Precison Neddle, which made in precision, the error of inner diameter is below 0.01mm,all steel pipe special technical designed, no coarse process, reach to the inner and outside wall polished and end of steel pipe angle-stand, make sure the precision of liquid flowed, non-dropping, neilsbed are made from double helix tighten and circle for much area designed. make the cooperate safely and easy to disassembly(can be made elbow neddle by customer's requires)

Specification	Inner Dia	Outside Dia	Color
14G	1.55mm	2.10mm	Olive
15G	1.36mm	1.80mm	Amber
18G	0.84mm	1.27mm	Green
20G	0.60mm	0.91mm	Pink
21G	0.51mm	0.82mm	Purple
22G	0.41mm	0.72mm	Blue
23G	0.34mm	0.64mm	Orange
25G	0.26mm	0.51mm	Red
27G	0.21mm	0.41mm	True Color
30G	0.16mm	0.31mm	Lilac
32G	0.11mm	0.23mm	Yellow

blunk needles (18G)