Welcome to Fireball Tool Europe!

Mega Package

100.00200.00 excluding VAT



Aluminum (AL) 200mm

1 x Mega Square 200mm Aluminum

2 x Locking C-Clamps 165mm Swivel Pad

4 x Edge Alignment Pins

Aluminum (AL) 300mm

1 x Mega Square 300mm Aluminum

2 x Locking C-Clamps 280mm Swivel Pad

4 x Edge Alignment Pins

Cast Iron (FE) 200mm

1 x Mega Square 200mm Cast Iron

2 x Locking C-Clamps 165mm Swivel Pad

4 x Edge Alignment Pins

Cast Iron (FE) 300mm

1 x Mega Square 300mm Cast Iron

2 x Locking C-Clamps 280mm Swivel Pad

4 x Edge Alignment Pins

The original Mega Square is available in a 300mm or 200mm size with two material choices: Cast Iron (FE) or Cast Aluminum (AL). All Mega Squares feature a stiff “flange and web” design that is fully machined on all outer edges with tapped holes on the sides for mounting tabs.


These locking pliers from Strong Hand Tools are the perfect companion to our Fireball Squares.

Cross Section
Made of heat treated steel and nickel/chrome plated for strength and durability.

Single Hand Release Handle
Vinyl coated release handles made for comfort and ease.

Secure Adjustment Bar
Minimizes adjustment bar pop outs.

Adjustment Screw
Large adjustment screw with a hole for easy torque.

Install our Edge Alignment Pins on any square to create a large, overhanging edge which can be used to index the square on a different plane. Depending on the square, this allows you to create edges which are 90 degrees (perpendicular), 45 degrees, parallel, and even 60 and 30 degrees from the edge.

  • Use it with our Monster Squares to create a speed square for layout.
  • Use it to hang the square off the edge of a table for working vertical or perpendicular to table surface.
  • Use it to elevate the squares off the ground or table for extra clearance when you’re fitting and welding entire frames.
  • Tip! If trying to create a parallel edge with the Mega Square for marking, use our shims to get that perfect distance!

4 Edge Location Tabs

Our revolutionary tabs allow you to align your material up so that you don’t even need a welding table! Don’t spend thousands on a flat table, just use our squares! Tighten the tabs onto the front or back of your square and you can immediately get to work. Sure, there are different jigs out there, but can they line your material perfectly in seconds?

4 Tool-less Thumbscrews

But it doesn’t stop there. We reinvented the game by introducing our thumbscrews. Say goodbye to your hex keys and Allen screwdrivers and freely adjust the tabs with only your fingers!


Mega Square 200mm

For 50mm tubing and smaller

Mega Square 300mm

For 50mm tubing and larger

Aluminum vs Cast Iron

Cast Iron


  • Great for heavy duty projects
  • Excellent resistance to deformation and raising burrs when scratched.
  • Some natural resistance to weld spatter.


  • Heavy (Not ideal for mobile welding)
  • Susceptible to rust.



  • Lightweight (Ideal for welding on the go)
  • Resistance to deformation vs aluminum billet
  • Some natural resistance to weld spatter.


  • Can be be damaged if dropped or if used in heavy duty projects.

What is Black Oxide?

Black Oxide, blackening, oxidizing, oxiding, black passivating, gun bluing… these terms all refer to the process of forming a black iron oxide on the surface of ferrous metals.

The black oxide process is a chemical conversion coating. This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. Instead, the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. These oxidizing salts include penetrates, catalysts, activators and proprietary additives which all take part in the chemical reaction. The result of this chemical reaction is the formation of black iron oxide, magnetite (Fe3O4), on the surface of the metal being coated. Black oxide has a range of unique properties and benefits including corrosion protection & reduced friction.

The Magnetic 25-50-75 blocks are the larger, beefed up version our magnetic shop shims. The blocks have 2 powerful rare earth magnets flush mounted on each of 3 different faces while their opposite faces remain without magnets.

​You will find yourself reaching for these all the time instead of digging through the scrap bin.

​​If you weld everyday, don’t even bother finding a place to store them, just attach them to the side of your table or table legs.

​Ground parallel and square on all 6 sides.






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