Danco 88438 Kitchen Sink Strainer Washer Assortment N/A Imported Contains 1 rubber washer and 1 fiber washer Ideal for use in kitchen sinks Rubber washer dimensions: 4-3/8 in. x 3-7/16 in. x 1/8 in. Fiber washer dimensions: 4-3/8 in. x 3-9/8 in. x 1/32 in. Universal design Easy to install