This kit: https://www.harborfreight.com/34-in-5-in-carbon-steel-hole-saw-set-18-pc-68115.html is awesome for cutting holes in sheet rock for recessed lighting,particularly the smaller LED fixtures. Doing some basement finish work in the new house, and was dreading the labor of cutting holes with a drywall saw. For $16, this kit has a great assortment to cover the install of most small LED "can light" dimensions. Literally took 10 seconds to drill each hole. Huge time saver, much better result than using a hand saw. And the kiot comes in a nice, neat storage box.