Size measures about internal diameter: 4mm/0.16"; outside diameter: 6mm/0.24".
Safe for salt water and freshwater.
Check the tubing Dia. before place your order.
Flexible and durable.PVC material.
Package Included :1 x 328-feet/100M Airline Tubing ,30 xSuction Cup，20 x tube connectors
This 328ft/100M flexible airline tubing is a great way to hide necessary airline tubing in your aquarium.Great for all your aquarium airline needs.
Saim Flexible Airline Tubing for Aquariums Terrariums and Hydroponics 300-Foot Spool - B01N520JQ8