About Products: OOTDTY Product Size: 7mm*80/100/120/150mm 8mm*80/100/120/150mm color: White Material: fiber cotton Quantity: 50 pieces in line with pack Directions for replacement: 1 the water for tank 2 out the clear out plastic part(notice the at the bottom) 3 out the filter out and replace the recent filter out 4 in the clear out plastic part(notice the on the bottom) five the water for tank Note: 1mm=0 Please enable 1-3mm error because of handbook measurement. pls make sure you do not mind earlier than you bid. Due to the adaptation between assorted monitors, the picture will not mirror the particular color of the item. Thank you!