Heavy-duty, solvent-proof, resists softening and wear. 3/32 in size for vinyl flooring and floor tile; 1/8 in for carpet and vinyl tile; 3/16 in for wall tile and tile board; and 1/4 in for ceramic floor tile. No.31 - For vinyl flooring and floor tile. No.32 - For carpet and vinyl tile. No.33 - For wall tile and tile board. No.34 - For ceramic floor tile.