The base of the kit is a flexible grip that fits snuggly on the Boltzen 30 and 55 watt head by simply sliding on. The grip has magnetics built into the face of it so that you can easily snap on the modifiers: grid, filter holder or diffuser. The modifiers can be used individually or stacked with the magnetic snap system allowing for a lot of creativity. The grid modifier will focus the light on the subject while minimizing spill on the surroundings. The filter holder allows the 24 filters to be used individually or stacked up to match or create a specific look. The diffuser modifier diffuses and softens the light output. This compact kit allows for a bunch of creativity on the fly and is a highly recommend accessory for the Boltzen 30 and 55 Watt LEDs.