Blowers with variable nozzles

A blower, comprising:

• a fan;
• a main body housing the fan, the main body defining an airflow path extending between an inlet end and an outlet end;
• a handle connected to the main body for handheld operation;
• and
• a variable nozzle disposed at the outlet end, the variable nozzle defining a longitudinal axis and a circumferential axis and comprising:
• an attachment collar, the attachment collar comprising a body defining an exterior surface and an interior surface and extending along the longitudinal axis;
• a plurality of air control bodies, each of the plurality of air control bodies movably connected to the attachment collar and comprising an air control surface and an extension rod;
• and
• an adjustment collar, the adjustment collar disposed around the attachment collar and defining a plurality of adjustment channels, wherein each of the plurality of extension rods is disposed in one of the plurality of adjustment channels,
• wherein rotation of the adjustment collar about the longitudinal axis causes movement of each of the plurality of adjustment channels relative to the extension rod disposed therein and in turn causes movement of the plurality of air control bodies,
• wherein each of the plurality of adjustment channels is defined between an upper collar portion and a lower collar portion, and wherein a thickness of the lower collar portion tapers in a direction along the circumferential axis.