For the transfer and handling of air sensitive materials. Constructed of S.S. #304 with both ends having a 22º deflected point for septum penetration. Available in the listed needle gauge and lengths. SOLD 3/PKG. Needle Gauge Dimensions:16 Gauge: 0.065" OD x 0.047" ID 18 Gauge: 0.049" OD x 0.033" ID, 20 Gauge: 0.035" OD x 0.023" ID, 22 Gauge: 0.028" OD x 0.016" ID