18–25 mm with two
The 275 mm wrench has 14 and 19 mm holes; the 290 mm wrench has 23 and 25 mm holes. Both shafts are 12 mm thick.
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Fine-tune heavy-door hinges-12%CODEcapitalone12Harfington Door hinge adjustment wrench set, 8–25 mm
Two double-ended wrenches for adjusting hinges on fire doors, cleanroom doors and security doors. One covers 8–19 mm and the other 19–25 mm, with a rust-resistant galvanized finish.
12%$18.07
Price with code · Harfington · as of 2026-10-09Code capitalone12 · 12% off
2Made for heavy doors
It is designed for hinges on fire doors, cleanroom doors, security doors, safes and engineering doors.
3Double-ended design
Each wrench has two heads, so just flip it for the other size. The galvanized finish resists rust.
Key specs
- Range
- 8–19 mm · 19–25 mm
- Lengths
- 275 mm · 290 mm
- Hole diameters
- 14 / 19 mm · 23 / 25 mm
- Shaft
- 12 mm
- Finish
- Galvanized
Good pick if
- You maintain fire or security doors in a building
- You install and service doors
Think twice if
- You have not checked your hinge type (confirm it fits first)
FAQ
Is there a promo code?
Yes. Enter capitalone12 at Harfington checkout when buying the Harfington Door hinge adjustment wrench set, 8–25 mm for 12% off.
Which doors is it for?
The page lists hinges on fire doors, cleanroom doors, security doors, safes and engineering doors.
Can I return it?
The product page offers 30-day returns from delivery. Returns are free within the US; elsewhere you pay the return shipping.
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