- Standard Size Compatibility: Designed to fit standard spin mop systems with an inner diameter of 6.3 inches. Before ordering, please measure your existing mop head to ensure a perfect fit. Refer to the detailed images provided below for guidance. Note: Avoid machine washing as the middle support is plastic. - 5-Piece Replacement Set: This set includes five microfiber refill heads, compatible with most 360-degree spin mops, including Hurrica, Mopnad, Cassabel, and other systems with a standard size of 6 to 6.3 inches. - Dual Cleaning Functionality: Use these mop heads dry to effectively pick up pet hair, dust, and debris, or wet for a thorough clean on hard surfaces. This versatility makes it an essential tool for maintaining cleanliness in your home. - Easy Installation: The mop heads feature elastic buckles on both sides for hassle-free attachment and removal. They are also easy to wash, ensuring convenience and hygiene with every use. - Practical Applications: Ideal for daily cleaning tasks, these mop heads are perfect for households with pets, busy families, or anyone looking to simplify their cleaning routine. Whether tackling spills in the kitchen or dust buildup in living areas, these mop heads deliver effective results.