I think he means "fret-less"

[TheGreek]

https://www.ebay.co.uk/itm/Kramer-Active-Flush-fret-or-Fret-Lined-Bass-guitar/183116382855?hash=item2aa2964287:g:eNkAAOSwepZaoYca

[fleabag]

His description of what the hell flush fit is, ...er .... a tad lacking innit

Only 300 made ( so he says ) , so i'd have put up a serious description of this bass.  And just for good measure, how about a photo of the strangely unique, only 300 made, fretboard ? No photo. Why not ?

Way to go Richard Cranium

[oldslapper]

Bless!

[BigRedX]

It doesn't matter. It's so vastly overpriced given the condition that it won't sell.

[Happy Jack]

Just our of idle curiosity, why are the two halves of the body completely different colours?

[pineweasel]

To be fair, flush-fret is a term used to describe fretless banjos, so that probably why he’s used it. 

I quite like these old Kramers, but they do weigh a ton. 

[BreadBin]

They're heavy, but not Travis Bean heavy!