Thank you for looking. This is 11 out of 12 PAL drain filters. For use with rubber stopper type drains only. Cannot be used with pop-up drains, etc. Compatible with standard sink drains with a diameter of 33mm to 40mm. Rubber drain filter catches hair and debris, preventing clogs. Also prevents the loss of contact lenses, etc. - Brand: PAL - Quantity: 11 out of 12 - Use: Drain filter - Material: Polyurethane foam - Color: Yellow We look forward to your purchase if you are interested.