Features: Equipped with 8mm and 15mm double brush heads crafted from high density steel wire, this gaps cleaning tool efficiently tackles narrow grout lines and wide floor gaps without shedding or rusting. Features rusts proof electroplated bristles and a wire design for aggressive scrubbing of hardened debris and gentle dust removal, ensuring scratch resistant surfaces. Ideal for DIY enthusiasts, homeowners, and professional cleaners seek a sturdy wire brush for accuracy cleaning in bathrooms, kitchens, and tile installations. Perfect for removing cement residues from tile joints before sealing, cleaning debris in window tracks, and sanitizing tight space around toilets and sinks. Engineered with 40% denser bristles per cm² and tested through 5,000 frictions cycles, this practical scrubbing tool delivers long time performances on concrete, stone, and seal surfaces. Specifications: Material: Steel Large Size:Approx. 155x15x15mm/6.10x0.59x0.59inches Small Size:Approx. 130x8x8mm/5.11x0.31x0.31inches Package Includes: 2Pcs Steel Wire gaps Cleaning Brushes note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color.