See the Informational video here first. 

For a limited Time we are offering a Free Vinyl Tubing Cutter that cuts 1/4" to 1" Clear Tubing and is perfect for doing these Manifold replacements.. Limit one per order..

This kit is a 2" Spigot X Dead End X (6) 3/4" Barbs manifold and a 2" Spigot X 2" Slip X (6) 3/4" Barbs manifold and a 2" Spigot X 2" Slip X (6) 3/4" Barbs manifold and Coupler Basic Replacement Kit. 

Note: 2"= 2 3/8" in PVC Plumbing. 

This 18 Barb Kit consists of (2) Manifolds with (6) 3/4" Barbs, a Manifold with (6) 3/4" Barbs, (2) Barb Plugs, a 2" Coupler, 6" of 2" Soft Pipe. 

The kit is to be used to replace a broken manifold and extend the output side tubes and use the coupler to spin it to win it on the old pipe and then glue the 6" piece of 2" Flex in and then glue the manifolds in from there. 

The Manifold receives a 2" pipe or fitting on one side which would measure about 2 3/8" OD and then slips inside of the other manifold and then a 2" fitting glues in on the other side that would measure about 2 3/8" ID.