THE TRUNCATED AND RECESSED BALL IS AN INEXPENSIVE MODIFIED BALL FORM.

THE ANNULAR RING RESULTING FROM THE RECESS FORMS AN EXTREMELY STABLE MOUNTING SURFACE.

THE VERY ROUGH ELECTRICAL DISCHARGE MACHINED SURFACE OF THE RECESS IS EXCELLENT FOR GLUING.

THIS FORM HAS A MUCH LOWER PROFILE THAN A COMPLETE BALL.

THE DESIGN HAS A .005" DEEP RECESS ON ITS FLAT SURFACE THAT IS MADE VERY ROUGH BY ELECTRICAL DISCHARGE MACHINING. THIS ROUGH SURFACE IS USED IN APPLICATIONS WHERE THE BALL IS GLUED IN PLACE.