After decking out the music room, I have 3 of these left over unused with the slat wall mounts as well.

$30 for the lot plus postage.

Here's the description from their site;

Brand new with high quality

Fits any guitar neck with a width of up to 5cm

Easy to install and remove

Solid construction

Soft Man-made Sponge on mount neck tubing to avoid marking the finish on your guitar

Rotatable and adjustable to left and right for best holding angel

Fit on both slat wall or drywall


Weight: 200g per set