Joest 9 Round Drywall Sanding Discs for Porter Cable 7800 220 Grit

The Joest 9" Round Drywall Sanding Discs for Porter Cable 7800 with a grit rating of 220 are a mixed bag of experience for customers. The sandpaper is durable and gentle on walls but seems to have a compatibility issue with some sanders. Some customers have reported that the sanding discs do not work well with their Porter Cable sander but have worked well with a different system. The discs have been reported to be good quality but could benefit from being made more durable. The sanding discs seem to be an improvement over the Porter-Cable versions as they do not leave circular scratches, but the edges can tear easily if they hit objects such as electrical boxes.