Dottie Machine screw kit includes 370 assorted 6 - 32 Phillips/slotted round head machine screws of size 100 - 1/2-Inch, 75 - 3/4-Inch, 75 - 1-Inch, 50 - 1-1/4-Inch, 40 - 1-1/2-Inch and 30 - 2-Inch. Screws in the kit feature zinc-plated steel construction. Screws come in a reusable 6-compartment box.