SGE NanoVolume Syringes, Volume: 0.5 uL, Needle Gauge: 23 G, Model: 0.5BNR-5, Needle Point Style: Removable Cone, Length Needle: 50 mm, 1.96 in., Accuracy: +/-2%, Connection Type: Removable, Diameter Outer: 0.2559 in., 6.5 mm, Diameter Outer Needle: 0.0248 in., 0.63 mm, Length: 2 in., 50 mm