All Metal Plate Base Threaded Height Adjustable Feet Levelling Glides or All-Metal Base Plate Height Adjustable Threaded Feet Glide Levellers, Steel Base Levelling Feet Glides, All-Metal Threaded Feet, Steel Height Adjusters, Metal Levelling Feet and Steel Plate Adjusters with a Zinc Plated Finish. Due to their flush low profile design, these feet can also be used as clamps.