The Sure Comfort Insulin Syringes (by Allison Medical) are high quality and easy to use. This 31 gauge syringe holds 3/10cc's of insulin, and uses a 5/16" lubricated needle for a comfortable injection. The SureComfort Half Unit Short Needle, 31G 3/10 cc 5/16 inch U-100 Insulin Syringes features a 1/2 unit measurement system that allows you to get more precise dosages. Syringes come in sterile poly bags of 10 syringes each, for your convenience.