Microfiber Replacement Mop Head Refill for 360° Spin Magic Mop - Round Shape Standard Universal Size (5 Pack) by FAMEBIRDHIGH QUALITY Made with 100% Super Absorbent Microfiber Strands, anti abrasive and won't scratch the surfaces you're cleaning. Easy to replace so you can thoroughly clean all your surfaces without fail, work effectively and ensure safety FREE SIZE Please make sure to measure the diameter of your mop head's plastic core to insure you purchase the proper size. Our mop heads fit most mops with a plastic round diameter between (6" 6. 3"). Our mop head's