16-piece brass winding key set — two spider keys covering ten clock sizes between them, plus fourteen pocket watch keys to handle virtually every winding square you'll come across.
⭐ At a glance
📦 16 keys in total: 2 brass spider clock keys + 14 pocket watch keys
✅ Spider keys cover sizes 2–11 (one key holds even sizes 2,4,6,8,10; the other holds odd sizes 3,5,7,9,11)
✅ 14 pocket watch keys cover all common pocket watch winding square sizes
✔️ Brand new, solid brass construction
🔧 What it does & how to use
A spider key is a single tool with several different sized square holes arranged around a hub, letting you wind clocks of different sizes without carrying a full set of individual keys. This set pairs two spider keys — one for even-numbered sizes, one for odd — with a separate run of 14 individual pocket watch keys, so between them you're covered for almost any clock or pocket watch winding arbor you'll meet. Ideal for hobbyists, collectors and clock/watch repairers who work on a mix of movements.
- Check the arbor: look at the square winding arbor on the clock movement or the winding square on the pocket watch.
- Pick the right key: for clocks, choose the spider key (even or odd) and turn it to line up the matching-size hole; for pocket watches, select the individual key that fits snugly.
- Test the fit: the key should slide fully onto the square without force and without play — try adjacent sizes if it feels loose or tight.
- Wind: turn gently and evenly, stopping as soon as you feel resistance at full wind — never force it.
