The Kreg KHC-90DCC is a 90 Degree Corner Clamp. A quick and easy self-squaring design makes it easy to square and secure individual joints,every time. 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.