1705RNR, volume 50 μL, needle size 22s ga (blunt tip), needle L 51 mm (2 in.) Pricing. 20888. 1710RNR, volume 100 μL, needle size 22s ga (blunt tip), needle L 51 mm (2 in.) Pricing. 20890-U. 1750RNR, volume 0.5 mL, needle size 22 ga (blunt tip), needle L 51 mm (2 in.)