Polymed Polyflo Flow Regulator Precise flow rate control of I.V. fluids with range of 5 to 250 ml/hr. With Y injection port for intermittent medication. Also available with thumb support Y injection port and Needle Free Y site. Male luer connector at one end and female luer connector at other end. Standard tube length: 20 cm without Y site & 40 cm with Y site. Soft and kink resistant DEHP free PVC tubing ensures uniform flow rate. Smooth roller clamp facilitates easy, safe control and adjustment of fluid rates.