The pedal system works with any road bike shoe. These have three bolts to connect the cleat to the shoe. It will not work with MTB shoes since these have only two bolts.
One pedal weights 5 ounces (144 grams) and the cleat plates weights 1.5 ounces (43 grams). The pedal's width is 3.5 inches (89 mm), length 3.2 inches (84 mm). The total axle length is 3.5 inches (89 mm), the axle part that protrudes the crank is 3 inch (77 mm) long. The pedal's center distance to the crank is 2 inches (52 mm).