contractor services, namely, construction and installation of helical piers, underpinnings, piles, anchors, and related helical piering accessories, including brackets, connectors, and cross-bolt systems for use with helical piers, to support new construction and existing structures

Metal construction materials, namely, helical piers, underpinnings, piles, anchors, and structural replacement parts for metal helical piering, namely, brackets, connectors, and cross-bolt systems specifically designed for use with metal helical piers