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This article is about the default melee weapon for the Engineer. For other wrenches, see Wrench (disambiguation).

The Wrench, also known as the Uhlman Build-Matic Wrench, is the default melee weapon for the Engineer. It is a monkey wrench with an antique design.

The primary function of the Wrench is to upgrade and repair Dispensers, Teleporters, and Sentry Guns. In addition, while placed buildings construct themselves, striking them with the Wrench causes them to build 2.5 times faster. This effect is additive, with each consecutive swing increasing the build rate (up to almost double the default rate). Hitting buildings with the Wrench can also remove Sappers placed by enemy Spies.

Switching from this weapon to the Gunslinger destroys any existing Sentry Gun placed by the player. Similarly, switching to this weapon from the Gunslinger destroys the Gunslinger’s Combat Mini-Sentry Gun.

Damage and function times

See also: Damage
Damage and function times
Damage type Melee
Ranged or Melee damage? Melee
Base damage 100% 65
Critical 195
Mini-crit 88
Damage repaired per hit 102
Upgrade amount per hit 25
Metal cost per repairing hit damage / 3
Metal cost for reloading ammo 1 / bullet, 40 / hit
2 / rocket salvo, 16 / hit
Function times
Attack interval 0.8 s
Values are approximate and determined by community testing.


Strange variant

Related achievements

Leaderboard class engineer.png Engineer

Built to Last
Built to Last
Help a single building tank over 2000 damage without being destroyed.

Circle the Wagons
Circle the Wagons
Repair 50,000 damage to friendly buildings constructed by other players.

Doc, Stock, and Barrel
Doc, Stock, and Barrel
Repair a sentry gun under fire while being healed by a Medic.

Fistful of Sappers
Fistful of Sappers
Destroy 25 sappers on buildings built by other team members.

Get Along!
Get Along!
Manage to get to, and then remove, a sapper placed on your building while you were several meters away.
Land Grab
Land Grab
Help a teammate construct a building.

Quick Draw
Quick Draw
Kill a Spy and two sappers within 10 seconds.

Rio Grind
Rio Grind
Perform 50 repairs and/or reloads on a Sentry gun being Wrangled by another Engineer.

Silent Pardner
Silent Pardner
Upgrade 50 buildings built by other team members.

The Wrench Connection
The Wrench Connection
Kill a disguised spy with your Wrench.

Leaderboard class medic.png Medic

Midwife Crisis
Midwife Crisis
Heal an Engineer as he repairs his sentry gun while it's under enemy fire.

Update history

April 29, 2008 Patch (Gold Rush Update)
  • Added swing animations.

February 3, 2011 Patch

  • Engineers who hit teammate Sentry Guns with their Wrench now get kill assists from that Sentry Gun.

February 14, 2011 Patch

  • Fixed melee attacks not destroying remote detonation pipes (Stickybombs).

August 18, 2011 Patch

  • [Undocumented] Added Strange variant.

December 15, 2011 Patch (Australian Christmas 2011)

December 19, 2011 Patch

  • Festive Wrenchs can now be gifted.

January 11, 2012 Patch

  • Fixed some cases where strange wrenches would fail to correctly count kills.

August 15, 2012 Patch (Mann vs. Machine Update)

  • [Undocumented] Added Silver and Gold Botkiller variants.

October 9, 2012 Patch

  • Added Rust, Blood, Carbonado, and Diamond Botkiller variants.

December 20, 2012 Patch (Mecha Update)

  • Added Silver and Gold Botkiller Mk. II variants.

February 15, 2013 Patch

  • Fixed the Botkiller Wrench using the RED team arms skin while on the BLU team.

November 21, 2013 Patch (Two Cities Update)

June 18, 2014 Patch (Love & War Update)

  • Converted the Wrench models to use the c_models system.

December 8, 2014 Patch (End of the Line Update)

  • [Undocumented] Added a description to the Wrench.

July 2, 2015 Patch #1 (Gun Mettle Update)

  • Updated description to better detail the weapon's features.
  • Construction boosts (Wrench hits, redeploys) from multiple sources is now additive instead of multiplicative. Calculations are based around a 1x base building speed.
  • Increased base Wrench construction speed on hit boost by 50%. Buildings now build 2.5x faster instead of just 2x (additive of 1.5x + base speed).
  • On Wrench equip change, buildings no longer self-destruct unless the building type is changed (i.e. Only Sentry explodes when switching from Wrench to Gunslinger).
  • Building repair costs increased from 20 metal to 33 metal to repair 100hp per Wrench hit (from 5HP per metal to 3HP per metal).

January 7, 2016 Patch

  • [Undocumented] Fixed the Festive Wrench not showing the lights in client view.

July 25, 2019 Patch (Summer 2019 Pack)

August 21, 2020 Patch (Summer 2020 Pack)

  • Fixed Australium Medigun(sic)/Wrench items not dropping for the Mann vs. Machine rewards.


  • With flipped view-models enabled on all its Botkiller variants, the Wrench's robot head has its normals inverted, making it appear see through.


  • The Wrench is included with the Sentry Gun's delivery package.[1]


See also