Formwork spring clamps are a widely used accessory to connect formwork panels together during the placing of concrete. They are an easy-to-use, fast, and efficient way to connect your formwork together using rebar or tie rods of standard diameter, typically 5-12mm, and in some cases, will even eliminate the need for spacer tubes. Generally, these clamps are made from pressed steel or cast iron, and often include a spring operated clamp that will also grasp the rebar securely to help keep formwork straight and true, while at the same time allowing for the rebar tie to do the same thing.