These Blumat 8mm Hose Unions, also known as 8mm couplers) are ideal for re-connecting your 8mm tubing back together. This fitting essentially acts as a band-aid to connect two pieces of 8mm tubing back together.

Useful for fixing leaks or sections of your supply line that got kinked or opened up somehow. Simply cut into the tubing, and connect each side of the 8mm tubing back together, no need to purchase an entire extra line of tubing.