24pcs small caliper pop up sink drainage spring filters Most quantities can last for a long time and are consistent and fast to use. Compatible with most pop-up sink drain coresENHANCE FILTRATION: these pre-filter sponges could help to trap particles and debris,and prolong the life of your filter media,provide efficient water flow with less clogging for long lasting filtration.DISPOSABLE: The most sanitary and convenient way to protect your drain. No more cleaning hair or even molds built up on the drain covers. With our product, you simply peel off and toss when it becomes full.Sponge filters provide biological filtration, trap large amounts of waste, and do not clog easily. The size of the pores is measured by the number of pores in the unit area (PPI), the higher the PPI, the more pores in the sponge.COST EFFECTIVE: Save hundreds of dollars from spending on the after the fact solutions such as clog remove chemicals, column visits, or other gadgets Our hair catcher can be used on the drain in bathtub, shower stall or bathroom vanity sink. Prevent the loss of