Colour Filter Set 32.5mm (Red | Green | Yellow | Blue). This Colour Filter Set consists of four high-quality colour filters in red, green, yellow and blue. The filters are each pre-mounted on a cap which can be directly attached to the lamp head of the compatible flashlight. Red reduces reflections and helps maintain night vision. Green and red are suitable for animal observation, among other things. Yellow improves the sight in foggy conditions. Blue enhances visibility of tracks and liquids. The colour filters are suitable for the MT10 flashlight.