BD Micro-Fine Demi 0.3ml Syringe 0.3mm (30G) x 8mm Description BD's classic design for injection comfort, the BD Micro-Fine Demi 0.3ml Syringe 0.3mm (30G) x 8mm syringe needle that has been trusted for years by people with diabetes. They are packaged in polybags of 10 for your convenience. All BD insulin syringes are: Engineered with optimal point geometry for maximum comfort and reliability