The PacTool SA90338 Gecko Gauge Siding Installation Tool is a set of two plastic tools designed for installing 3/8" engineered wood siding. The gauge tool helps ensure accurate measurements and cutouts for a perfect fit. With a compact size of 9.92x5.83x2.24 inches and a lightweight design of 1.34 pounds, this tool is easy to handle and store. The rectangular shape and standard style make it a practical addition to any DIY enthusiast's toolkit. Made by the trusted brand Pactool, this siding installation tool is a reliable choice for your home improvement projects.