NEW THINNER NEEDLE! The BD Ultra-Fine™ Needle is a 30-gauge, 12.7mm (1/2") syringe needle engineered to provide comfort, accuracy and ease in injecting. BD syringes are available in three barrel sizes (1cc, ½ cc and 3/10 cc). They come in boxes of 100, and are packaged in polybags of 10 for your convenience.