A huge assortment of 419 rubber \'O\' rings for various industrial and automotive applications. A most useful standby kit for that unexpected mechanical problem. Neatly presented in a purpose built storage case. Inside Dia. Mm Section mm Qty Inside Dia. Mm Section mm Qty 3.0 1.5 20 22.0 2.5 13 4.4 2.0 20 22.0 3.5 10 5.0 2.0 18 23.5 3.5 10 7.0 1.5 23 25.0 3.5 10 10.0 1.5 23 26.5 3.5 10 10.0 2.5 14 28.0 3.5 10 11.0 2.5 13 30.0 3.5 10 13.0 1.5 23 31.0 3.5 10 13.0 2.5 14 33.0 3.5 10 14.0 2.5 13 34.5 3.5 10 16.0 2.5 14 36.0 3.5 10 18.0 2.5 14 38.0 3.5 10 18.0 3.5 10 41.0 3.5 10 19.0 2.5 13 44.0 3.5 10 20.0 3.5 10 47.0 3.5 10 21.0 2.5 14 50.0 3.5 10