Maxx Flex (5/8 ID x 3/4 OD x 50 ft) HydroMaxx Flexible Non-Toxic, BPA Free Clear Vinyl Tubing Crystal clear and smooth, Shore A Hardness Resistant to Chemicals, Non-marking, non-conductive and silicone free Smooth Inside and Outside - Allows Unrestricted Flow Non-Toxic PVC Tubing Can be Steam Sterilized No Marks on tubing, Manufactured to FDA and USDA Standards