Needing two types of insulin, I.... like most diabetics have to inject myself 4 times a day ; once in the thigh for the Lantus insulin and three times in the abdomen for the Humalog insulin prescribed several years ago before each meal, these syringes are fabulous due to the short and thin needle and practically pain-free, Strongly recommend the quality of these needles and superb service from Vetdepot (as always).