The Boltzen Snap Kit is a quick magnetic mount for adding light modifiers or colored filters (gels). It's a simple way to change your small CAME-TV Daylight Boltzen Fresnels to Tungsten or use it to add a splash of color from the dozens of choices in the kit.
You can find more information about the CAME-TV Boltzen Snap Kit over at their website (found here).
CAME-TV Boltzen Magnetic Snap Kit