Sorby 78222 Steb Drive, 7/8 in. Made to fit into the jaws of a chuck, the Robert Sorby Steb Drive eliminates the need to remove the chuck each time you wish to use a drive center. Fits neatly in most four-jaw scroll type chucks. This revolutionary spur drive combines a spring loaded center point with a ring of razor sharp teeth. By winding in the tailstock the degree of "bite" can be varied while still keeping the center point firmly located. This offers many advantages.
With a light setting this offers safety for the novice turner because the workpiece simply stops revolving should a dig-in occur, rather than causing kick back. In time critical production turning, the teeth can be backed off with the point still in place, so the workpiece can be stopped and checked without removing it from the lathe, and finished pieces and blanks can be exchanged by backing off the tail stock, rather than starting and stopping the lathe.
Size refers to drive face diameter. Comes in diameters of 1/2", 7/8", and 1-1/4". Robert Sorby. England
Model: LSTBCHUCK
