Commonly referred to as the "Slide On Coupler", this Commercial Coupler Kit includes a low profile elbow suitable for Kegerators like the Series X and Series X Plus.
Total height of an A type coupler with the low profile elbow bend will be 128mm. 

How To Assemble Correctly

Step 1 - Remove the black o-ring from the grey duotight 5/8" fitting for the GAS IN side
Step 2 - Insert the duck bill valve into the side port of the coupler (this will act as the o-ring
Step 3 - Attach the grey duotight to the gas in port (the one without the o-ring)
Step 4 - Drop the ball down the vertical port on the coupler
Step 5 - Push the netting cap inside the coupler
Step 6 - Screw the low profile elbow on the vertical port
Step 7 - Screw on the liquid ball lock post

Includes:

1 x - A-Type Coupler with 5/8" Male Beer and Gas threads
2 x - 5/8 Female Thread x 8mm duotight push in fittings (for gas and liquid)
1 x - Low Profile Elbow. (required for internal height of Kegerators)
1 x - Gas Duck Bill valve (Non-Return Gas)
1 x - Liquid Non-Return Kit (Ball and Net)