An assortment of extra-thick neoprene rubber sealing washers from The Hillman Group. Neoprene rubber washers are small flat rubber rings used on fasteners and in mechanical devices. Variants included in this assortment range from 1/4" to 5/8" in inner diameter, 1-1/2" to 2" in outer diameter, and all measure 1/8" thick. Full assortments of #50445 contain six (6) refills comprised of Hillman item numbers #406367 - #406372.