Clamp the Insider Balloon Stuffing Tool to the edge of a table with the yellow square facing out. Roll the neck of a large balloon down and stretch the balloon over the rim of the Insider. Make sure the balloon is centered on the Insider tool.

Hand-tight connect the Insider Inflation Tool to a Dual Split-Second Sizer or Duplicator 2. Set the automatic sizer to the appropriate size of balloon that will be inflated inside the large balloon.

Press the Air Hose over an outlet of the Air Force 4 (or any air machine) and turn the blower on. Place the other end of the Air Hose over the back port of the Insider tool and fully inflate the large balloon.

Stretch a balloon over the Insider Inflation Tool and insert the balloon into the back port of the Insider. Activate the automatic inflation cycle by pressing the foot pedal of the Dual Split-Second Sizer or pressing the inflation button on the Duplicator 2 to inflate the balloon. When the balloon is fully inflated, quickly remove the inflating outlet and stretch the neck of the balloon firmly for to create a seal, preventing air escaping from the large balloon.

To easily tie the balloon, place two fingers on the stretched neck. Rotate your hand one full revolution to create a loop with the stretched neck of the balloon. Tuck the end of the balloon neck through the top of the loop to knot the balloon.