EFK-II Supply Optical Trial Frame Titanium Adjustable Optical Optic Trial Lens Frame

Do you know the pupil diameter of the trial frame that comes with this set (158pc Metal)?

Are the diameter' of all trial lens' in the sets the same, so they can be interchanged with different frames? 38mm?

what are the dimensions for the trial lens box

Is this frame makes from metal, metal gears, etc. vs Chinese plastic version? Thanks.