Stick-on PSA Sandpaper Roll, 4.5" Wide, 10 Yds. Long, 150 Grit. 150 grit Aluminum oxide paper with no-load stearate coating Perfect for finishing sanders that require 1/4 or 1/2 sheets of stick-on sandpaper Fits Porter Cable 505 half-sheet sander as well as others Easy and quick to attach - Cut to size