Originally posted by Muse GerryL, how can you tell that's a screw type hood? Just from the photo on ebay?
Yes Muse, from the photos and I already saw one of those before first hand.
What gives it away is that thing that they call a "rear locking ring".
It is the one that screws onto the filter thread of the 58mm lens, you can then turn the petal hood a full 360 degrees either way since it is the rear ring that threads to the lens filter thread mount and leaves the petal hood part to freely rotate.
It would seem though that they incorporated a lock on it since they now call it with a "rear locking ring" (maybe to prevent unwanted rotation).
If you have doubts, find another one like it and ask the seller.