This is a pre-owned standard 7 bar air hose for Hall micro 100 products such as the surgairtome two or 5053-11 sagittal saw. It's 3m long with an MA-7 fitting at the regulator supply end and the Hall fitting at the device end.
We can also service these hoses if you have one that needs to be repaired? It will be usually be cheaper than buying a replacement. Go to our repairs page for details on how to send it in for a quote if required.