The BD Micro-Fine + Insulin Syringes offers people with diabetes a comfortable and convenient method of injecting insulin. •Needle: 29G, 0.33mm outer diameter, 12.7mm Length •Latex-free •Pack of 100 (10 sealed bags of 10) The BD Micro-Fine + 0.5ml syringe is graduated in 1 unit intervals and is ideal for doses between 30-50 units.