The Easi Plumb Tap Washers 3/8" are designed for easy installation and replacement. They are non-toxic and suitable for use with modern basin/sink taps. Each pack contains 5 washers, ensuring you have a spare on hand when needed. The 3/8" size makes them compatible with a variety of tap types. Replacement tap washers are essential for maintaining a drip-free tap, and these Easi Plumb washers are a reliable choice.