rare breed guitar flat top knobs

For sale are a pair of rare breed guitar flat top heavy knurled knobs.
These really are gorgeous I've had them on my Anderson for a year or so.
Never been gigged or left the house for that matter!
They cost me 35
So I'm asking 10 quid delivered
http://i1219.photobucket.com/albums/...n/DSC_0259.jpg

What fixture are they hex screw or slip on?

A friend is after some.

They fit with a tiny grub screw or hex screw not quite sure the correct name!!

G'wan then - pop me your payment details and I'll have 'em please. :)