CLOCK WINDING KEYS brass spider odd/even pair all sizes key wind old clocks

Brass spider clock winding key set covering 10 different winding-square sizes across just two keys.

⭐ At a glance

📏 10 sizes, 2 keys: one key holds the even sizes (2, 4, 6, 8, 10), the other holds the odd sizes (3, 5, 7, 9, 11)

📦 Included: 2 brass spider keys

✔️ Condition: New

Colour: Gold brass finish

🔧 What it does & how to use

A spider key is a multi-size winding key for mantel, wall and longcase clocks, letting you wind a mainspring without needing a separate key for every winding-square size. Handy for hobbyists and clock repairers who service a range of movements, since the two keys between them cover ten common square sizes.

• Identify the winding square: check the size of the square arbor on the clock's movement.
• Pick the right key: use the even-numbered key (2, 4, 6, 8, 10) or the odd-numbered key (3, 5, 7, 9, 11) depending on which size matches.
• Locate the matching hole: each key has several square holes stamped with their size — find the one that fits snugly onto the arbor.
• Wind gently: turn in the clock's normal winding direction, never forcing it, and stop as soon as resistance is felt at full wind.

⚠️ Please check the winding square on your clock against the sizes on these keys before buying — spider keys cover common sizes, but some clocks use non-standard or worn arbors that won't seat properly.