Amazon.com: UltiCare U-100 Insulin Syringes, Comfortable and Accurate Dosing of Insulin, Compatible with Any U-100 Strength Insulin, Size: 1cc, 31G x 5/16'', 100 ct Box : Health & Household
Amazon.com: EasyTouch U-100 Insulin Syringe with Needle, 30G 1cc 5/16-Inch (8mm), Box of 100 : Industrial & Scientific
BD Ultra-Fine Insulin Syringes Short Needle 31G 1/2cc 5/16" 90ct - Medical Supply Corner