This Elenco Capacitor Kit contains an assortment of ceramic disc, mylar, and electrolytic-type capacitors. There are 21 varieties, with 100 pieces total: 30 ceramic from 10pF to 470pF, 35 mylar from 0.001μF to 0.220μF, and 35 electrolytic from 1μF to 1000μF. Packaged in a cardboard organizer box. Ideal for prototyping, students, and hobbyists.