Orb

 
  
The Orb is a 45 millimeter ball. It has a setscrew and a locking nut to hold it on the controller stem. Happening to be in a precarious position and the joystick falling off teaches you the important of the locking mechanism.
Gently snug up the setscrew with the included Allen wrench to fully secure the Orb.
 
The Orb is available in 3/16  and 1/4 inch connect ability and is available in a wide selection of colors.
 
*REMEMBER measure twice, pay once 
 
In addition to the handle, you'll receive one allen wrench for tightening the set screw.  Use the wrench gently - over-tightening will strip the plastic threads in the handle.  The set screw won't completely prevent the handle from turning but should prevent accidentally knocking it off.