From Manufacturer
This Correction Dome Gel Kit from MagMod is a set of six correction dome gels that includes full CTO, 1/2 CTO, 1/4 CTO dome gels, as well as full blue, full plus green, and 8x ND dome gels. You can attach one dome gel or stack multiple dome gels at the same time to adjust your flash's color balance. Compatible with the Reflector XL or the MagBox Pro system, this kit is designed to give you multiple color combinations and precise color calibration for any shoot.
These dome gels can be quickly mounted, swapped, and mixed with other MagMod modifiers for even further customization of your setup. This Correction Dome Gel Kit is part of the only custom gel system that allows you to stack multiple gel colors for use on almost any strobe. They're made of durable, rigid polycarbonate and are virtually indestructible. You can safely drop them without worrying or causing any damage.