Features:Contains every o-ring size you will ever needIdeal for garages， general plumbers， mechanics， workshopComplete with storage caseCase Size: Approx. 24.7x15.3x4.2cm/ 9.72x6.02x1.65"Includes 32 Popular Metric Sizes:R-01 20pcs-3mmx1.5mmR-02 20pcs-4.4mmx2mmR-03 18pcs-5mmx2mmR-04 23pcs-7mmx1.5mmR-05 23pcs-10mmx1.5mmR-06 23pcs-13mmx1.5mmR-07 14pcs-10mmx2.5mmR-08 13pcs-11mmx2.5mmR-09 14pcs-13mmx2.5mmR-10 13pcs-14mmx2.5mmR-11 14pcs-16mmx2.5mmR-12 14pcs-18mmx2.5mmR-13 13pcs-19mmx2.5mmR-14 14pcs-21mmx2.5mmR-15 13pcs-22mmx2.5mmR-16 10pcs-18mmx3.5mmR-17 10pcs-20mmx3.5mmR-18 10pcs-22mmx3.5mmR-19 10pcs-23.5mmx3.5mmR-20 10pcs-25mmx3.5mmR-21 10pcs-26.5mmx3.5mmR-22 10pcs-28mmx3.5mmR-23 10pcs-30mmx3.5mmR-24 10pcs-31mmx3.5mmR-25 10pcs-33mmx3.5mmR-26 10pcs-34.5mmx3.5mmR-27 10pcs-36mmx3.5mmR-28 10pcs-38mmx3.5mmR-29 10pcs-41mmx3.5mmR-30 10pcs-44mmx3.5mmR-31 10pcs-47mmx3.5mmR-32 10pcs-50mmx3.5mmPackage Included:1 x 419Pcs Assorted O Ring Rubber Seal Set