Unolok Single Use Syringe with NeedleUnolok sterile single use syringes with needle are synonymous with high qualityBarrels and plungers are made of non-toxic, medical-grade polypropylene compatible with any medicationBoth have a 6% luer taper as per ISO:594Gaskets are made of natural rubber which is chemically inert and compatible with any medicationAvailable in needle sizes of 21G and needle lengths of 1.25 inch BOX OF 25'S | 50's Size: 20ML | 10ml Nozzle: Luer LockNeedle Size: 0.80 x 38 mm | 21 G x 1 ½ inch