Asst contains 4 each of the following thicknesses: 0.001″, 0.002″, 0.003″, 0.004″, 0.005″, 0.010″, 0.015″, 0.020″, 0.025″, 0.050″, 0.075″, 0.100″, and 0.125″. Made from a 300 series stainless steel that resists rust and corrosion. Size E – 6″ x 6″. Slot Size – 2″. Packaged in a durable metal box. Precision Brand® Slotted Shim is the best way to solve alignment and leveling problems on motors, pumps, generators, and other plant machinery. Slotted shims are economical, safe, and accurate. Reduce labor costs by eliminating hand cutting and reduce downtime by eliminating shim preparation.