This type 18-8 sealing washer assortment includes all 8 sizes. The included sizes are #6, #8, #10, #12, 1/4", 5/16", 3/8" and 1/2". A total of 190 high quality 18-8 stainless steel sealing washers, glued with neoprene, all neatly in a sturdy storage box (7" x 4" x 1.5").