Plastic Material of Kitchen Sink Strainer - Made of environmentally friendly plastics for bottom + Soft TPR resin flower shape edge,weight: 30 g/pcs,set of 4. Size of Sink Strainer - Overall diameter: 4.5 inches, inner filter: 3 inches.Suitable for drain diameter 3-4 inches; Fits for most kitchen sink drains. Easy to Clean - 2.5mm dia petal holes can effectively catch food particles debris, it’s easy to clean,just remove the strainer to empty, wash with warm water for a stain free surface. Sturdy & Durable - Stain-resistant,plastic material does not stick with food residue,unlike other sink strainers, it fits snugly inside your sink drain, keeps all the nasty stuff from blocking your drain Multiple Colors of Sink Strainers - 4 colors ( Red,Blue,Green,Orange), it dress up your sinks with bright color, a good alternative to metal sink strainer.