This item is a selection of at least 75 parts from a variety of different vintage and antique machines, including typewriters and adding machines. Some parts are singular, while other are multiples. The assortment may include mechanical arms (some single or double hinged), springs (in a range of lengths and thicknesses), gears, metal hooks, ribbon holders, bells, knobs and handles. Each box is unique. If you prefer more of one part than another, please let us know and we will try to meet your needs.