AMAZING item. Fits all standard drill bits with a regular sized chuck, eliminating the need for larger and more expensive drill bits. I used this with my Craftsman Bolt On (Black n Decker Matrix) planter and it was so quick to set up some trellis posts that I wanted to put in the garden and planting the bulbs was so easy. He digs really deep and fast. Second use - mix my floors! Every spring after repotting, I add my old, depleted potting soil to my garden. I usually use my hand rake and shovel to mix the old potting compost with the new top compost plus some existing potting compost, but I used this tool as a hand blender and it got the job done VERY quickly, mixing it into a homogeneous mixture. the best homogenized mix I've ever made by hand! I like it!