BD PEN NEEDLE 31G 5MMThe BD UltraFine 31 G 5 mm pen needle (also called the mini or nopinch needle; BD product code 320145) is known for its exceptional comfort and precision. Here's a detailed overview: Key Features & Benefits Needle gauge & length 31 gauge, ultra thin (0. 25 mm diameter) 5 mm (3 16) length one of the shortest on the market Comfort engineered design Pentapoint 3bevel tip for smoother, less traumatic skin penetration MicroBonded lubrication reduces