A reserve price is the minimum price the seller will accept. This price is hidden from bidders. To win, a bidder must have the highest bid and have met or exceeded the reserve price.
Legs extend from 15 inches out to about 27 inches - clamps hold them securely at this length. Each end has a pin to hold them at your preferred angle - works best on a soft surface.
Key looking fixture is the end of the screw to fasten to your camera. The picture above & at the bottom show the most accurate colors.