Kreg KHC-90DCC 90-degree Corner Clamp
Use the Kreg KHC-90DCC 90-degree Corner Clamp for quick and easy self-squaring joints.  Also perfect for drawer construction and shelf installation.  Features innovative design which aligns work pieces to 90 Degrees, an L-Handle which lets you quickly adjust for varying thicknesses up to 1-1/4-Inch, a large clamping surface which protects soft woods against work piece imprint, and an improved quick release lever for ease-of-use.