12 3d printed driver and bow machine gunner hatches. Various periscope positions including closed and unclosed. Will fit the Tamiya and Asuka M4 and M4A1 small hatch hulls, pretty close on the Border Model kits, will likely be useful for other brands. I don't own any Rye Field kits yet. Parts are 3D printed in gray resin. Detail is fine and delicate, so care must be exercised in handling, including removal from supports. Best to use a sprue nipper or sharp toe nail clipper. May be a choking hazard for small children. I try to make the detail on my parts as fine as possible within printing constraints.