Posi-loc pipe connectors -- for a secure connection. Vented back pad -- allows air to circulate around the user for greater operator comfort in hot weather. Maximum Air Speed (mph) at nozzle.2 yr commercial / 5 yr consumer. The item "ECHO PB-580T BRAND NEW 215 MPH 510 CFM 58.2cc Gas Backpack Blower Tube Throttle" is in sale since Monday, December 21, 2020. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Leaf Blowers & Vacuums". The seller is "mowbilitysalesiowa" and is located in Pella, Iowa. This item can be shipped to United States.