I purchased this item to extend my drill bit so I can drill through a stump to fit a killer stump. I found that some bits worked better than others, so I had to change them several times over time. However, after the 3rd change, the top hex nut split and had to be drilled out to get the bit out. The extension itself also warped and bent during use. Now I know that drilling a tree stump for a 1 1/2" bit and that extension is hard work. But I only used it for 15 holes in one day before it warped. Okay, maybe that was it a lot.for that.But do realize that the screws that hold your racquet in place are cheap metal that breaks easily.It's just a cost savings that shouldn't be there.
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