Durable and reusable, it is Perfect for, nurse, PA, and velvet students. Note: Two red blood containers can be filled with red ink or red medicine instead of syringe blood. After filling, the will produce a blood return effect. Two green blood vessels are open and can be used for water infusion exercises. The best choice for venipuncture IV , training, infusion training and blood formation to improve your skills. Help you confidently handle all types of s. Venous vessel location random Note: Random location, don't accept the specified Venous vessel location. Colour:As shown Material:Silicone Package Contents: 1 * suture pad Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.