For when you absolutely positively need the best possible option for coring concrete and don’t mind paying for it. This thing is self propelled, self contained (with water), self feeding, hydraulically controlled with an onboard tachometer and can core anything between ½” to 24” at the flick of a switch. Overkill for 99% of core drill users probably but we love to see it in action making the job of precisely drilling a dozen 24” holes look as easy as playing a game of Frogger. Diamond Products Core Drills are some of the best on the market and the “Ultimate Drilling Machine” 4250025 ($43K, Ohio Power Tool) is certainly the show piece that lives up to its name. See it in action in this video from the 2012 World of Concrete.
