1) Made of high quality stainless steel 2) With large ID and high flow 3) Semi-transparent needle-hub for the convenient observation of blood reflux 4) Delicately-designed needle-point with features of sharpness, smooth puncture, less damage to the tissue, less painful feeling to the patient 5) Size distinguished by the needle-hub's color for the clear recognition 6) The flexible supply form: in bulk or pack, sterilized or unsterilized 7) Production of all kinds of special needles required by our customers 8) Packing types: in bulk or in blister 9) Gauge: 29G,30G,31G, 32G available 10)Available length:1/6",1/4",1/3",1/2",5/8",3/4",1",1.25",1.5",2"