A step up from the Model 65B, the Model 85B utilizes the CP 14 rock drill and is designed to drill a 5/8 - 2 in. (15.9 mm to 50.8 mm)
diameter hole a maximum of 9 in. (228.6 mm) deep and will operate in a 30 in. (762.0 mm) area. Though compact, this unit can easily adjust to drill
into the center of a 24 in. (609.6 mm) slab. And at only 85 lbs. (38.6 kg), it can be quickly repositioned.