---
title: snapseries
---
Published as [@freesewing/snapseries][1], this package provides series
of common sizes for elastics and zippers and series of common intervals
to be used with snapped percentage options.
## Exports
All exports are plain objects with `metric` and `imperial` properties
that can be used as the `snap` property for snapped percentage options.
Some exports have `metric` and `imperial` properties that are
arrays of numbers.
These exports and their properties are:
- `elastics`: Arrays of common elastic widths
- `zippers`: Arrays of common zipper lengths
Other exports have `metric` and `imperial` properties that are
numbers to allow options to be _snapped_ to multiples of the value.
These exports and properties are:
- `smallSteps`: Intervals of 1 mm or 1/32 inch
- `steps`: Intervals of 5 mm or 1/8 inch
- `bigSteps`: Intervals of 10 mm or 1/2 inch
## Installation
```sh
npm install @freesewing/snapseries
```
## Example
In NodeJS:
```js
import { elastics } from @freesewing/snapseries
myOption: {
pct: 10,
min: 5
max: 35,
snap: elasitcs,
}
```
## Units
All measurements are in mm.
:::note RELATED
Please see
[Snapped percentage options](/reference/api/part/config/options/pct/snap)
to learn more about how snapped percentage options are used.
:::
[1]: https://www.npmjs.com/package/@freesewing/snapseries
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