This cleaning brush features a metal “spine” with a tough, rigid bristle head. It’s 1.4 inches longer than standard brushes, and the high-density bristle design effectively removes dirt, mud, mold, and soap scum. The set includes two sizes of crack cleaning brushes for various tasks. The large brush is great for grout, shower door tracks, and more, while the small brush is perfect for smaller areas like accessories. The brushes are flexible and wear-resistant. When dirty, simply rinse with water to restore cleanliness. The U-shaped handle has a hole for easy hanging and storage. Its elongated design allows the brush to reach deep into crevices, effortlessly scrubbing hard-to-reach areas where dirt collects.