Stainless Stepless Clamp (suit 7-10mm OD) 10.5mm

These clamps are the golden standard in what comes in your Kegerator kit, and used widely for 5mm ID and 6mm ID x 8mm OD beer and gas line. If you are using 4mm ID x 8mm OD beer hose, you will need to purchase the 7-10mm (10.5mm) Clamps as the internal wall is thicker and won’t fit over the clamp.
Stepless clamps are designed to tighten in an exact circle around the hosing, sinply use a crimping tool or the middle cutter on your pliers to crimp (not squeeze) the stepless clamp closed.

Sizes:
6-8mm will suit our 5mm and 6mm ID beer line
7-10mm ID will suit our 4mm ID beer line.

Many home brewers use worm drive hose clamps that can be handy because they can be re-used however worm drive hose clamps simply dont work that well on beer line.  The worm drive tends to pinch the line on one side causing the hose to leak or de-rates the pressure holding capacity of your system.  These stepless clamps are significantly better because they form even compression around the whole diameter of the line.  This makes a much better and more reliable connection.

Also once attached the stepless clamps form a neater connection with no screws/bolts hanging off to get caught on things so they do make a neater more sanitary connection too.

To see how to use the clamps look at this youtube video below