Piers, including screw piers; piles, including screw piles; posts and post supports; ground supports; ground anchors, screw anchors, rock anchors, tension anchors, foundation anchors; stabilizing assemblies, supporting assemblies, reinforcing assemblies, drilling bits, driving adaptors, extensions, couplings, helical screws, helical flytes, parts, components and accessories for the aforesaid goods; all the aforesaid goods being wholly or primarily of metal and included in class 6