SGE eVol Handheld Automated Analytical Syringe, eVol Analytical Syringe, Volume: 500 uL, Needle Point Style: Bevel, Quantity: Each, Length Needle: 50 mm, 1.96 in., Needle Gauge: 25 G, Diameter Inner Needle: 0.012 in., 0.32 mm, Diameter Outer Needle: 0.024 in., 0.63 mm