Air Conditioning Pipe Kit Piping pipework DIY Copper Refrigeration Flare
For your info : Most 2.5Kw ( 9000btu ) and 3.5Kw ( 12000 btu ) ac systems use 1/4 and 3/8 pipework ( so if your model number has a 9 or 12 or 2Kw or 3.5Kw in it the smaller pipework kit will be correct ).