Clamping Squares Plus make assembly a simple process. Instead of struggling to keep corners lined up while trying to install fasteners, just locate a Clamping Square Plus on the corner, throw a clamp on both legs, align your panels and secure the clamps. Now you have both hands free to fasten your project. We sold thousands of our original Clamping Squares over the years, then in 2018, we redesigned it bigger and stronger than before. The new Clamping Square Plus is a full 3/4" thick, with legs 1-1/4" wide and 6-3/4" long.