419pc Universal O-Ring Assortment Set Metric Kit Automotive Seal Rubber Gasket 32 different sizes most used in plumbing; automotive and general repair Latched storage case for easy organization and portability Oil & Water Resistant Rubber GENSSI 419pcs total o-ring kit in blue case; Includes various sizes from 1.5mm thickness to 3.5mm thickness; Diameters from: 3mm to 50mm