Made from a 300 series stainless steel that resists rust and corrosion. 50mm x 50mm. Slot Size – 16mm. Tab makes shim placement easier and safer, while eliminating the need to place hands under the machinery during installation or removal of shim. Each shim marked with thickness in metric. 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.