Adjustable Wrench
A single wrench with a jaw that adjusts to many fastener sizes, so you do not need a full set.
What is it?
An adjustable wrench, sometimes called a crescent or graduated wrench, uses a movable jaw so one tool can grip a range of fastener sizes. It is compact and handy for a small roll or road kit, though fixed-size wrenches fit better when you need full torque.
What is it used for?
- Covering many fastener sizes with one tool
- Quick repairs without a full set
- Trail, boat, and bike kits
How to choose
Choose the jaw range that covers the fasteners you actually meet, in one size system. Prefer fixed sizes when you often work near a torque limit.
Anatomy
Understanding the parts of a adjustable wrench helps you use, maintain, and buy it with confidence.
- Body: the main working portion of the tool
- Working end: the part that contacts the material
- Handle: the part you grip for control and leverage
Materials & construction
Quality adjustable wrenchs are made from hardened, heat-treated steel (often chrome-vanadium or high-carbon) chosen for strength, edge retention, and resistance to wear and corrosion.
Safety & maintenance
- Inspect the tool before use and replace any that are worn or damaged
- Use the right tool for the job and apply controlled force
- Store tools clean and dry to prevent corrosion
- Wear appropriate eye protection for the work
Also known as
crescent wrench, graduated wrench