Multi Purpose O-Ring Help! By Dorman 80020 1/8" Inside Diameter-3/4" Inside Diameter/ 1/4" Outside Diameter-15/16" Outside Diameter, Assortment Of 18Multi Purpose O Ring; 1 8 Inch Inside Diameter 3 4 Inch Inside Diameter 1 4 Inch Outside Diameter 15 16 Inch Outside Diameter; Assortment Of 18; Card Constructed From Durable MaterialsLong Lasting DurabilityConveniently Packaged In A Variety Of Piece Counts To Assist With Both Small And Large ProjectsSuitable For A Broad Range Of Household, Industrial And Commercial Uses. Use With: Automotive Repair Job Size: 1 8 Inch To 3 4 Inch Inside Diameter, 1 4