WORKPRO Auger Drill Bit Set with Hex Drive 2-Piece, Garden Post Hole Digger for Planting Bulbs Seedlings, 4x22cm 8x30cmEfficient Digging Post Holes: This set features two auger drill bits: 4x22 cm for holes 4 cm wide and 22 cm deep, and 8x30 cm for holes 8 cm wide and 30 cm deep. Ideal for planting and garden preparation Universal Hex Shaft Size: Compatible with any 3 8" or larger chucked drill. For optimal performance, use an 18V or higher drill, or a minimum 14V cordless drill, for efficient planting Unique Design: The auger's spiral edge and minimal distance from