First picture, yes smooth metal post sleeve with long wood screw, same as opposite side of the gate; 2nd picture, The left side of the spinner bracket is supported by a smooth metal post, not a black plastic one, the right side of the spinner bracket is screwed down to the wooden siderail on the right side. The hole to the top right is actually a double clear plastic star post that supports the PF plastic above it. The starpost has a threaded stud on top to accept the nylon nut to fasten the plastic to the post as common everywhere.