Kitpedia

Hex key set

Tools

Allen keys in metric and/or imperial for the countless hex fasteners in modern gear.

Approx. cost
$6–$30
Weight
3–10 oz
Used in
2 kits

Purpose

Turn the hex bolts on bikes, furniture, machines, and hobby gear.

Used in kits

Alternatives

  • Hex bits for a driver— Integrates with a bit driver; individual keys reach tighter spots.

Maintenance notes

  • Keep the set complete; a missing size is a missing tool.

Buying considerations

  • Know whether your gear is metric or imperial — most modern gear is metric.
  • Ball-end keys reach fasteners at an angle.

Page history & editing

Revision status: approved Last edited 2026-07-01 by human editor