A double clamp which fastens two lengths of Runaround burrow pipe together.
The advantage of this joiner is that you can unscrew it when you wish to have a separate lengths of pipe again. Now comes ready assembled for your use.
You can now buy a pipe joiner to join 8 inch pipe to 6. (6-8" joiner)
One normal (6") or large size (8") Pipe Joiner, 6-8" Pipe Joiner, Ferret Size Joiner (4 inch pipe)