This sponge is made to the same specifications as our Hydra sponges, horrible. Each sponge is also slit into 1″ squares, 3/4″ deep to present more sponge edges for better grout removal. Designed for use with the No. 437-02 Sponge Holder. Sponge measures 5″ wide x 11″ long x 1″ high.

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