Hello,
I have for sale a new in box never used Ikelite W-20 with 67mm threads (6420). Also included is the red filter to fit the lens (6441.42)
More info can be found here:
http://www.ikelite.com/accessories/6420-w20-lens.html
http://www.ikelite.com/accessories/6441.42-color-filter.html
Originally $299.99, now $249 and free shipping to lower 48. PayPal accepted.
Note, will not be able to ship until the 20th of April.