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.The item "Back pack Leaf Blower Tube Throttle 215 MPH 510 CFM 58.2cc Gas Padded Pack Lawn" is in sale since Monday, April 8, 2019. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Leaf Blowers & Vacuums". The seller is "mowpartpower" and is located in Royse City, Texas. This item can be shipped to United States.