Description of π§ Century Drill Tool 38596 2 Inch: Precision Performance for Efficient Drilling
Cuts treated wood and poles wherever deep clean holes are required. Use in power drill or hand brace. Features a single cutter and spur design with a solid center twist for reduced vibration. 1/2" shank size.
From the product description I was a bit doubtful as to whether it was a 3/8 shank size or bits , but it's the size of a bit and very high quality with its own protective case.