The stainless steel AirLoc PRGI Jacmount® Adjustable Levelers are permanently attached to the levelling stud by means of a patented lock and yet are flexible enough that uneven flooors up to 4° can be levelled. Ideally suited to the food and chemical industries. The economical, stainless steel AirLoc GLRI Jacmount® Adjustable Levelers are used when vibration and structure-borne noise isolation is required for machines that have suitable fastening holes in the machine foot.