Echo 99944900011 24" x 2.5" Plant and Bulb Auger. ECHO Bulb and Plant Augers, (2.5 in. – 99944900011) and (3 in. – 99944900021) is best suited for drilling small holes for garden or potted plants and bulbs. Save time and drill easier with an engine drill. The auger design has a soil-clearing whip that helps to lift away dirt from the top of the hole to ensure ample room for potting plants, bulbs, small saplings or seeds. ECHO engine drill augers are engineered to fit ECHO engine drill models and most other engine drills.