From the inventors of the Speed Square comes this great kit that includes the new Pro Speed Square and the Speed Trim Square. Both models are aluminum die-cast for durability and accuracy. Made of heavy-gauge aerospace aluminum alloy, they are built to last. Black-filled embossed gradations stand out against a matte finish for easy reading and durability. The more you use both square, the more you'll see how well engineered these featured pack tool really are. Look for the Diamond cutout for genuine Swanson products.