Starrett SF190 Little Giant Jack Screws Complete Set With Fine Adjusting Screw And All Attachment

Six-piece jack screw set can be used to level a workpiece on the table of a planer or drill press or in a machine shop 20-pitch jack screw measures 1-1/4" in diameter at the base and offers a height range of 2-1/4 to 3-3/8 inches 1" and 2" extension bases can be used in combination with jack screw to achieve maximum height of 6-3/8" Auxiliary pointed screw can be used in place of the screw with a swivel cap Additional extension base suitable for use on irregular surfaces; extension "V" base can be used against cylindrical form