The NTTAT OPTIPOP RS ATC-RS-01 Cleaner Replacement Reel is designed as a replacement cleaning reel for the OPTIPOP optical connector cleaners, specifically the ATC-RE series. It contains 6 cleaning discs per set and is intended to be used when the original reel is worn out. This replacement reel ensures high cleaning efficiency, offering a cost-effective way to maintain optical connectors without damaging them.