Molded storage case included (407) professional quality O-rings Inside diameters from 1/8" - 2-1/4" Not for use with gasoline Assortment Includes: QTY - ID x OD x Cross Section (20) - 1/8" x 1/4" x 1/16" (20) - 3/16" x 5/16" x 1/16" (20) - 1/4" x 3/8" x 1/16" (20) - 5/16" x 7/16" x 1/16" (20) - 3/8" x 1/2" x 1/16" (20) - 1/2" x 5/8" x 1/16" (13) - 3/8" x 9/16" x 3/32" (13) - 7/16" x 5/8" x 3/32" (13) - 1/2" x 11/16" x 3/32" (13) - 9/16" x 3/4" x 3/32" (13) - 5/8" x 13/16" x 3/32" (13) - 11/16" x 7/8" x 3/32" (13) - 3/4" x 15/16" x 3/32" (13) - 13/16" x 1" x 3/32" (13) - 7/8" x 1-1/16" x 3/32" (10) - 3/4" x 1" x 1/8" (10) - 13/16" x 1-1/16" x 1/8" (10) - 7/8" x 1-1/8" x 1/8" (10) - 15/16" x 1-3/16" x 1/8" (10) - 1" x 1-1/4" x 1/8" (10) - 1-1/16" x 1-5/16" x 1/8" (10) - 1-1/8" x 1-3/8" x 1/8" (10) - 1-3/16" x 1-7/16" x 1/8" (10) - 1-1/4" x 1-1/2" x 1/8" (10) - 1-5/16" x 1-9/16" x 1/8" (10) - 1-3/8" x 1-5/8" x 1/8" (10) - 1-7/16" x 1-11/16" x 1/8" (10) - 1-1/2" x 1-3/4" x 1/8" (10) - 1-5/8" x 1-7/8" x 1/8" (10) - 1-3/4" x 2" x 1/8" (10) - 1-7/8" x 2-1/8" x 1/8" (10) - 2" x 2-1/4" x 1/8"