Antenna I'm using

Hi, just wondering if anyone here has heard of,or used a ‘skip master’ antenna?
I bought it a couple of years ago and have lost the paperwork for it,but seem to remember the sales guy saying it was obsolete old stock.

Update - found paperwork, Mobile one 72" skip whip.
Still sold…
The tip has a metallic tape round it,if that is trimmed to get good SWR does the fibreglass underneath have to be trimmed down as well?
Cheers.