Size: 4 in. 2-pack Introducing the 4 in. F Clamp Set by POWERTEC This 2-piece set features heavy-duty f style clamps intended for woodworking, welding and an assortment of general purpose applications. Their unique design offers quick and easy clamping. In addition to a large flat clamping surface, they have an adjustable arm that moves up and down without having to pull a lever. This gives you optimal control and maneuverability. Versatile Design Whether you're using them with your drill press or workbench table, these handy tools allow you to clamp practically anywhere. Use them to make straight edge cuts or to hold-down and glue large DIY projects. The universal design provides you with project flexibility and endless clamping possibilities. Premium Construction The clamps are designed with a lightweight, yet robust construction that can stand the wear and tear commonly associated with workshop environments. They possess an ergonomic design and come with comfortable grip plastic handles. The ductile cast iron arms contribute to the heavy-duty clamping capacity (330 lbs.), while the plastic jaw pads offer a non-marring hold to protect your material safely. Specifications Throat - 2 in. Maximum jaw opening: 4-1/4 in. Rail serrated edge: 0.59 in. W x 0.19 in. thick Package Contains: (2) F-Clamps.