Integra INS8401 AccuDrain External CSF Drainage System With Anti-Reflux Valve Contents: 1 AccuDrain External CSF Drainage System: 700ml Drainage bag (with Needle AccessSite), 75ml Burette Chamber, 150cm Green Striped Tubing Line with Anti-Reflux Valve and Needleless Sampling Sites, Integral Pole Mounting Support. One Leveling Device