This series consists of posts (GCM-0301), clamps (GCM-0302) andholders (GCM-0303), providing a quick way to set the height and angularorientation of mounted components. The posts can be rotated 360°withoutchanging their height. All the posts are of stainless steel. The holders canbe mounted on magnetic bases (GCM-42), magnetic plates (GCM-43),breadboards (GCM-30), and post bases (GCM-53), or directly mounted toan optical table.