Quick Verdict
If your project calls for a 12-inch by 12-inch piece of 6061 aluminum with a full 3/4-inch thickness, this plate delivers exactly that. At $55.00, it's a direct way to get a solid, flat metal blank without buying a full sheet.
Who It Suits
This plate is a good match for machinists, welders, and DIY builders who need a small, thick aluminum workpiece for things like jigs, fixtures, brackets, or custom parts. The dimensions are set, so it's best if your design already fits within a 12x12 area.
What Stands Out
The most obvious strength is the 3/4-inch thickness. This is not a thin gauge; it's a heavy slab that offers rigidity and material to work with. The 6061 aluminum alloy is a common general-purpose alloy, and the plate is listed as new and made in the United States.
Meaningful Trade-offs
The fixed size means you can't cut this into a larger layout. If you need multiple small pieces, you'll have to do the cutting yourself. For lighter jobs, a thinner plate would be easier to handle and cheaper per area, but this is the one size being offered here.
Bottom Line
For someone who specifically needs a 12x12x0.75 aluminum plate, this is a straightforward buy. The price is clear, and the alloy and dimensions are spelled out. If the size matches your plans, it's a useful piece of metal stock.
---
New, Kaiser 6061 Aluminum Plate 12x12x.75

This plate comes as a flat, 12x12-inch square sized at 3/4 inch thick. The description notes it is suitable for industrial, automotive, and construction applications that need strong but lightweight material. The listed attributes confirm the dimensions and the aluminum alloy type.
One concrete reason to choose this plate is the combination of thickness and surface area. A 12-inch square gives you room to layout a small part, while the 0.75-inch thickness provides enough material for operations like tapping or machining a step.
A limitation to keep in mind is that this listing is for a single piece at a fixed 12x12x3/4-inch size, so you'll need to manage any cutting or layout yourself. If your project requires a different shape or thickness, this particular blank won't adapt.