Check the listing for details. 3 Inch Earth Auger Bit by ThunderBay. Condition: New. Listed at 89.99 USD. Features a hardened centering pointHardened steel, replaceable cutting blade3 inch drilling diameter7/8 inch drive will fit all Thunderbay, Earthquake, Dolmar, Echo, and Maruyama power headsRugged welded steel construction with extra heavy powedercoat paint finish Product DescriptionFeaturesFishtail PointTHUNDERBAY Augers feature with helpful fishtail points, which make hole placement and starting easier.Replaceable BladesEarth auger blades will inevitably become dull. Our earth auger blades are simple to replace.Durable BitsOur earth auger bits are built to last, constructed from welded solid steel with a thick powdercoat finish.Shock absorbing Torque CoilTHUNDERBAY 6", 8", 10", 12" and 14" augers feature with the patent shock spring on the bit can help keep stability and absorb shock while in use2-Inch3-Inch4-Inch6-Inch8-InchDiameter2"3"4"6"8"Hole Dipth36"36"36"36"36"Weight6.67.27.712.115Patent Shock SpringNoNoNo✓✓10-Inch12-Inch14-InchDiameter10"12"14"Hole Dipth36"36"36"Weight17.827.937.8Patent Shock Spring✓✓✓