Gehmann iris, 48-colour & twin polarisers
Iris 0.5 - 3.0mm
Can be used as single or twin banks of six colours:
1. bank: orange, light green, yellow, medium grey, dark grey and amethyst
2. bank: Light blue, dark blue, lemon yellow, red, light green & lilac
Colours from one ring can be mixed with the other to provide the remaining 36 colour options
Twin polarisers
Can be used as iris only
Removable steel threaded connection
Easy clean instructions included
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