Adjustable Flex Shaft Holder Great for Holding Tools. This is a new adjustable flex shaft holder. This conveniently holds tools, which conserves valuable workspace. The wire hanger swivels 360. It has a 10" (254 mm) swing arm. It clamps directly to tables or workbenches up to 1 3/4" (44.5 mm) thick. The height adjusts up to approximately 42" (107 cm) above the work bench.