BD Micro-Fine Plus U100 1ml Syringe 0.33mm (29G) x 12.7mm is a single-use, fine-gauge insulin syringe designed for precise measurement of U100 strength solutions. It features a 1 ml clear barrel with easy-to-read markings, a 29G (0.33 mm) needle that is 12.7 mm in length, and an attached needle for accurate, low-volume dosing in clinical, veterinary, or research settings.