WALNUT HOLLOW-Clay Extruder Table Clamp. This table clamp is designed to be used the Walnut Hollow Clay Extruder Set (sold separately) but can also be used in a variety of other projects whenever a table clamp is needed. It is made of solid cast aluminum and has soft rubber grips inside the clamp jaws. It swivels a full 360-degrees; tilts 90-degrees; and the clamp jaws open 2 inches wide. It features a ball and socket base with lock-down adjustment and can be clamped onto most any desk; table; or other flat work surface up to 2 inches thick. Each package contains one Table Clamp. Imported.