6 Pack, Extra Large, 7-1/2" x 5-1/2" x 2", Heavy Duty Grout Sponge, Professional, Heavy Duty Sponge With Premium Density For Removing Excess Grout, Unique Hydro Design Provides High Water Holding Capacity, Rounded Edges Minimize "Digging Out" Or Marring Of Grout, Superior Strength Provides Durability For All General Purpose Cleaning.