E-Z Clip Series Fitting, 0.63 Lifesaver, -12 Hose, Straight

You'll need a few specific items to do it right. A pair of FT1357 Clip Closing Pliers are required to close the clips once everything is seated. You'll also need a guillotine blade cutter or something equivalent to get a clean square cut on the hose. Two appropriately sized clips and a cage per fitting, the GH134 Multi-Refrigerant hose, and refrigerant oil compatible with your A/C or refrigeration system round out the list. The nipple assembly comes with two black o-rings already on it, and those should stay put. Don't remove or replace them.

For tight spots, the E-Z Clip setup is meant to go together without power tools or crimping. You cut the hose square, slide on two clips, oil the nipple with the system’s refrigeration or compressor oil, push the nipple in until there’s no gap at the shoulder, snap the cage in the groove, then slide and close the clips using FT1357 clip closing pliers.