material: Made from 100% microfiber. The soft, fluffy fibers are durable and machine washable, with an expected life of about one year with normal household use. Size & compatibility: Core diameter 4.33 inches. Designed to fit ONLY the Spin Mop 2Tank System. Easy to install and remove. Not compatible with the Spin Mop 1Tank System. Efficient cleaning performance: Lightweight mop head reduces effort during mopping. The dense microfiber construction quickly absorbs water, oil and surface stains, making routine mopping faster and easier. Wet or dry use: Use wet to lift and remove spills, grease and groundon dirt; use dry to pick up dust, hair and fine debris or to finish a wet cleaning pass. surfaces: Ideal for hard, smooth and sealed floors including marble, laminate, wood and hardwood. Also suitable for sealed glass surfaces and quick car exterior or interior wipedowns. Practical and costeffective: Machine washable for repeat use; replaceable design keeps your Spin Mop performing like without replacing the whole tool. Typical uses: 1) Daily kitchen cleanups — soak and wipe spills and grease on tile or sealed hardwood floors. 2) Weekly deep clean — wet mopping to remove trackedin dirt on laminate or marble. 3) Quick auto detail — dry or damp wipe of seats, dashboards or sealed exterior surfaces. What you get: A quality microfiber mop head replacement designed specifically for the Spin Mop 2Tank System (4.33' core). Easy to attach, washable, and built for everyday household mopping.