The HCR900-ES II and HCR900-ES20 rock drills have a self-adjusting drill system
FlexiROC T30 R radio remote-control tophammer drill rig comes with either a COP 1240 or 1640 drill for 2- to 3.5-inch holes.
PowerROC T35 E surface drill rig is an extandable-boom version of Atlas Copco’s T35 rig.
Cat MD5150 tracked rock drill drills holes up to 6 inches in diameter. The carousel rod changer holds six rods and accommodates multiple lengths and diameters of drill steel.
Pit Viper 311 wide-range rotary blasthole drill can drill holes to 125 feet in a narrow range of sizes 9 to 12.25 inches