This QEP Bulk Bale contains 750 sponges tightly packaged and prepared for shipping, storage, or sale. The sponges are professional, heavy-duty, and ideal for grout cleanup. The foam density of this sponge is engineered for quicker grout pick-up and faster rinse. This most versatile sponge is great for residential, commercial, drywall, auto, and marine cleaning. A third party independent laboratory testing shows that the QEP Sponge outperforms other brands in elongation, tensile and tear strength.