1 - RED FILTER INSERT FOR DEEP UNDERWATER COLOR CORRECTION
1 - ND FILTER INSERT GLARE PREVENTION FOR BRIGHT SUNNY DAY USE COLOR ENHANCEMENT
1 - STARBIT SCREW REMOVAL TOOL.
The red filter improves quality performance at depths of 45ft plus.
ND filter is not good for low light situations.
NOTE: You must use the included mini star bit tool to remove the 10 screws on your Hero 2 dive housing to insert these filters between the actual lens & the glass front.