Lifting jacks and pumps, pre-stressing beds, stressing units, vibrating beds, curing beds, machines for use in the mixing and setting of concrete, machines for vibrating and pre-stressing concrete in moulds and forms, screeding machines, screeding apparatus, power operated machines and power operated apparatus for use in vibrating and compacting concrete masses, power operated cutting machines incorporating annealing devices and for use with wire ropes, power operated hand held tools, flexible drives and grinding attachments for use with power operated hand held tools, power operated presses (machines) and hand operated presses (machines), all of the foregoing goods being for use with, or forming part of, apparatus and installations for pre-stressing or post-tensioning concrete fabrications

Splices for reinforcing bars; sockets and sleeves; splices, loops and thimbles for wire rope; cables and slings; fixing bolts, fixing screws, fixing plates, and fixing holders, all being fittings for use with precast concrete fabrications; ducts, formers, spaces, sheathing, thrust rings, bearing plates, anchor plates, locking rings, helix springs, anchorage castings, compression grips, wedge grips, mechanical gripping devices (not being hand tools), moulds for forming concrete fabrications, connectors, couplers, joints, clamps, anchor lugs, line taps, loop stirrups, cable socks, cable rollers and cable blocks, all of the foregoing goods being made wholly or principally of common metal and being for use with apparatus and installation for pre-stressing or post-tensioning concrete structures or for inclusion in pre-stressed or post-tensioned concrete structures