SAN-214 DISCRIPTION GRAIN : SILICON CABIDE BACKING : FLEXIBLE PAPER GRIT : P80 - P800 SIZE : 9" x 11" SCN-285 DISCRIPTION GRAIN : SILICON CABIDE BACKING : FLEXIBLE PAPER GRIT : P80 - P600 SIZE : 9" x 11" ACN-185 DISCRIPTION GRAIN : aluminium oxIDE. BACKING : FLEXIBLE PAPER GRIT : P80 - P800 SIZE : 9" x 11" WSK-262 DISCRIPTION GRAIN : SILICON CABIDE BACKING : FLEXIBLE PAPER GRIT : P80 - P2000 SIZE : 9" x 11" WATER PROOF