i-Das Achromatic Wet lenses with 67mm adapters suitable to screw straight onto any macro port with a 67mm thread.
+8 and +16 can be stacked together.
£115.00 each or £200 for both purchased together.
Also available Inon 67mm thread lens holders that fit Inon float arms - a great way to carry your lenses until you need them -
I have 4 available and will sell for £20 each.