Ryobi RY40810 21 in. 40-Volt Cordless Whiseper Series Snow Blower (Tool Only)Conquer this winter with the RYOBI 40V HP Brushless 21 in. Whisper Series Snow Blower. The 40V HP technology paired with the brushless motor allows you to clear a path 21 in. Wide and 13 in. Deep, with a simple push of a.