MTC does not offer post or stands as they are available from several sources. Selling these would add cost to you as I would add profit for packaging and shipping. You can do as well as I can and save yourself some money. All MTC products use the standard 1/4-20 female (internal) thread camera mount for attachment. Consider the height and extension when ordering, shorter stands may be preferable. Generally the mounted wind flags should be no taller than a line from the top of the shooting bench to the bottom of the target. If you select the lighter stands, weight bags will help stabilize and protect your investment, just fill them with sand or use a brick. They are available from camera store suppliers and eBay. Post are sometimes found as accessories with several other wind flag providers.
MTC offers adjustable swivel type ball mounts for leveling and/or balancing your wind flags. We offer (2) two types, the larger mount has the capability to hold (4) four pounds at an off angel. The smaller will hold (3) pounds. They are not sold individually and only included with the Trackers and some bubble levels.
Both adjustable mounts are offered with bubble levels that are specifically designed to work together and on all Tracker products. However both of these mounts can be used independently. As a preference I recommend stands as I find it difficult to cope with the changing ground hardness while driving a post straight. Here in Oklahoma we have hard clay in the summer and pudding in the winter. Stands are available with the standard 1/4-20 male camera mount, post may not be universal.