ApplicationThe mop head replacement only compatible with new version Vileda 2-Tank EasyWring RinseClean Spin Mop, not for old version 1-tank systems, please kindly check your bucket type before ordering.Mop SizeThe diameter of the inner triangle is 8cm/3.15 inches, the diameter of the outer triangle is 10.9cm/4.30 inches, and the diameter of the whole mop is 28cm/11.03 inches. Notice: small size blue mop is only suitable for blue lid bucket.Machine WashableSpinning mop refill can be washed by hand or washing machine in warm water, and the laundry bag can protect the mop heads from tangles and falling off.Efficient CleaningSpin mop head is made of high-quality microfiber with strong water absorption and dewatering ability. The mop is available in wet and dry both, dry mop removes hair and dust, wet mop removes residual stains like footprints.Warm TipsOne mop head refill serves for 3 month, 6 pack can last for over one years and half, the time may vary depending on your cleaning frequency and environment.