The Rieke® Flexspout Jr. Pneumatic Air Insertion Tool is simple to use and reliably consistent. The Flexspout Jr. model meets USDA requirements for small containers. When closed, the low profile design keeps the container more compact, which facilitates stacking. For proper insertion on metal containers, Flexspout Jr. closures should be preheated to a temperature between 100° and 120° before insertion. Made of steel, this manually operated insertion tools affix intermediate and closes in three basic steps. To use, properly position the container using the guides on the foot of the tool, set the closure on the embossed opening and press the palm button. Requires 80 psi air pressure.