Echo 99944900280 40" x 8" Dual Blade Ice Auger. ECHO 8" Dual Blade Ice Auger (99944900280) features a unique cutting system designed with a centering ring that allows you to redrill old holes by metering the cutting depth with each turn of the blades. The system offers versatility with various ice conditions to tackle anything from slush to dirty ice. The auger bit has a 7/8 in. dia. driveshaft connection, is solid steel construction to provide durability against any type of icy condition and is powder coated to offer protection against weather and corrosion. ECHO ice augers are engineered to fit ECHO ice auger models and most standard ice augers.