You need to drill a hole BUT your drill bit is too big or it just won't bend that way. .BIG TOOL I needed to put wheels on my generator and my drill didn't fit in the space. Order this 90 degree adapter and you're done. It fits the space perfectly, and my drill has it and an old wrench that you put in the bit holder and turn all the way. out of my hands when he hits the drill on metal or something. I would recommend this product to anyone and why have a 90 degree drill bit and a regular dropper when all you have is this adapter. Great tool. solid tool