Serrated Handle Clamp Extension (D36 Arri) is a purpose-built accessory for Miller CompassX and ArtX fluid heads. It enables secure integration of Arri-compatible accessories, expanding rig versatility without altering head operation. The serrated pan-handle clamp improves grip and minimizes slip during pans, delivering repeatable control for dynamic shots. Designed for Miller's modular rig ecosystem, it preserves balance while enhancing functionality.