Merck Insulin Syringes U40 0.5 mL 1/2 Inch x 29 G Box of 100

These syringes are 40 IU per mL available in 1 cc (1 mL) 29 G or 0.5 cc (0.5 mL) 29 G. The syringes has 1/2 inch fixed needle for Caninsulin treatment. Each box contains 100 syringes.