The hair extensions set includes: 4 convex hair extensions, differentiated colors: Grey, White, Blue, Pink. Hair extensions are easy to install and remove: place the drain hair extensions in the corresponding sink or tile. Press the corners of the four sides to stick them. To remove, simply pull the clod out of the catcher Reminder: It is necessary that the air outlet be flat and free of overhead obstructions. Otherwise, you will not be able to vacuum it. Cut: Square, 5.785.780.4 inch, fits any sink, shower or tub drain outlet smaller than 5.78*5.78 inch. Widely Available Square Hair Drain Cap: This trap can be used in the kitchen sink to prevent food debris from running down the drain hole, or in the tub/shower to trap hair to keep your drains smooth and clean. Suitable for bathroom, laundry room, bathtub, kitchen, etc.