Our 90-degree corner clamps are CNC-machined from high-grade, solid aluminum alloy. This provides an optimal, lightweight balance without sacrificing heavy-duty structural strength. To ensure long-lasting durability in demanding workshop conditions, the surface features a premium anodized finish that heavily resists wear, rust, and corrosion.

These clamps are incredibly versatile and engineered to securely hold workpieces up to 3.5 inches (90mm) in thickness. This makes them ideal for a wide variety of dimensions, from thin picture framing strips to thicker lumber and structural panels.

Not at all. We understand how important surface integrity is for finished carpentry. The edges of our aluminum positioning squares feature subtle, precision-machined chamfers. These smoothly rounded corners prevent the clamps from digging into or marring softwoods and delicate wood veneers during tight glue-ups or fastening.

For maximum convenience, our clamps feature dual-standard, laser-engraved scales incorporating both Metric and Imperial units. Because the scales are permanently laser-etched into the anodized surface, they will not fade or rub off over time, allowing you to use them as quick, reliable reference squares.

These squares are a game-changer for any project requiring an absolute 90-degree alignment. They are highly trusted by both DIYers and professionals for assembling:

• Cabinet boxes, drawers, and shelving units
• Picture frames and custom mirrors
• Wooden boxes, crates, and birdhouses
• Right-angle framing and T-joints during gluing or screwing

While primarily engineered as high-precision positioning squares for woodworking, furniture building, and DIY craft assembly, the solid aluminum alloy build can handle light-duty alignment for non-woodwork tasks. However, please note they are not designed for high-load, structural industrial welding projects that exceed the natural thermal or load capacity of aluminum.

Setup is incredibly straightforward. Simply position your two joining wood pieces at a rough right angle, place the Mrorea 90° positioning square tightly against the inside or outside corner, insert the included L-shaped metal fastening rods into the alignment holes, and gently tighten down the ergonomic plastic nuts until your pieces are firmly locked into a flawless, true 90° angle.

We offer these tools in a highly efficient 4-Pack configuration. Your order includes **4 heavy-duty aluminum positioning squares (5.5" x 5.5")**, **8 adjustable L-shaped metal screw clamps**, and **8 ergonomic securing nuts**. Everything comes neatly packed in a reinforced storage case to keep your workshop organized.

Yes! We stand behind the premium craftsmanship of Mrorea tools. This product is covered by our store's comprehensive satisfaction guarantee. Additionally, we offer a dedicated **14-day return window** from the date of delivery. If your items arrive defective or fail to meet your rigorous woodworking standards, please reach out to us and we will make it right.