Made from extruded aluminum for enhanced durability. Compact and lightweight with user-friendly clamp knobs. Durable, lightweight, corrosion-resistant clamps. Introducing The Universal Fence Clamps by POWERTEC. These compact, yet lightweight clamps are designed to fit and secure a wide variety of shop made auxiliary fences (from 3/4 to 5-3/4 inches thick), while preventing interference of other …