This is a Dolphin Maytronics Tune Up Kit for Nautilus Robotic Pool Cleaner
This Kit includes:
6101609-R2: 2 Pack Light Blue Climbing Brush
6101611-R4: Wonder Brush Ring 4 Pack
9985006-R2: Grey Track Pack of 2
9991408-R4: Nautilus Spring Filters
9991425-R4: Dolphin Large Cartridge Filter Panel Nautilus Triton Etc.