General description Equipped with built-in stiff bristles, this 6 PC roller brush set is designed to effectively remove stubborn dirt from tiles and grout. It is ideal for cleaning various surfaces including ceramic tiles (both glazed and unglazed), terracotta, slate, travertine, and other hard and non-sensitive stones. Please note that this product is intended for use ONLY on hard and non-sensitive stone. Technical specifications Material: ABS Size: 14.5 x 5.5 cm Package contents: 6 roller brushes Machine washable up to 140 degrees Lint-free, highly absorbent, and robust microfiber rollers Measurement allowed error: +/- 1-3 cm Other information Color: White + Yellow Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.