Pinwheel Impeller for SICCE pumps - PSK600

Looks to be improvement over previous impeller. I use the psk 600s formerly the psk 2500's in my ati bm 250 skimmer. I have been running this skimmer for 10 years. In that time I've had to change the impellers a couple of times and completely swap out the pumps as well. They run 24/7 and don't last forever. That being said I am happy with the longevity of them and in this case I simply needed a new impeller and not a new pump. These are tried and tested skimmer impellers.