Dig deeper with this handy 16" Tube Drive Extender. Whether you use your auger for mixing liquids or powering through hard and heavy clay soils — this extender will help you customize your auger to match the task at hand. This extender is compatible with all Power Planter's tube augers, including the Extra Large Earth Auger (9" x 28"), Two Gallon Earth Auger (8" x 28"), Gallon Pot & Post Hole Auger (7" x 28"), Quart Pot Plant Auger (5" x 28"), and Large Bulb Auger (4" x 28"). Made from durable 100% American-made steel.