A leaf blower is a gardening tool uses air to move yard debris like leaves. Some leaf blowers can also suck leaves through a vacuum, and shred (break into small pieces) them into a bag.
Pictured are two examples of Stihl's leaf blower line. On the left is a mid-1990s model BG72 (with tube cut down) and on the right is a 2005 model BG85. Notice that both blowers do not really have any similarities.