A set of JMI Medium Wheeley bars with standard wheel (2 3/8"). This will take most tripods used with SCTs up to 9.25" or so. This one is almost new, and has been outside maybe five times, on a smooth concrete surface. I bought it for my GM8, but wound up buying a G11 tripod to put that on, so I also had to upgrade to the large JMI Wheeleys. Its in excellent condition, no marks, chips dings, scratches etc. The wheels have light wear from being on concrete, but are not worn or damaged. These cost about $165 new.
$99 plus shipping. Prefer paypal, no fee.