This is the Norton BLUE SUPER CLEAN pad.
Sold by the case (5 pads in a case).
SIZES; 10" to 20" ( 3-1/4" removable center).
For general duty scrubbing or heavy spray cleaning jobs.
These pads are dipped not sprayed which makes for a longer lasting pad.
The 10" & 11" are a non stock item so allow an extra 3-5 days for delivery.