Gutter cleaning kit includes: gutter nozzle, shoulder strap, connection collar, flexible tube, and (5) 20.6 In. extension tubes. Tubes maximize air flow through the entire assembly. Fits Toro models 51574, 51592, 51599, 51602, 51609, 51617, 51618, 51619, 51621, and 51690. 2 year warranty.