XtremepowerUS Post Hole Digger Replacement Auger Bits / Ice Bits / Extension Set / Spare Blade (Extension Set) Go to amazon.com Related posts Top 15 recommendation auger extension for 2022 FeatureCompatible to 3/4" ShaftDie Cast ConstructionIncludes 3 Sizes: 8", 12", 20"Is fit for Xtremepower hole digger: 81096, 81007, 81008, 85059 DescriptionExtension Set is fit for ASIN on Amazon: B0074U639Q, B005FG9WIA, B0096DW14U, B00CAY8WTU