Knowing both the total hole count and logistical factors of a job will help one decide if a larger, multigang drill is the most efficient choice.
Credit: E-Z Drill Inc. Knowing both the total hole count and logistical factors of a job will help one decide if a larger, multigang drill is the most efficient choice.

The full product line of dowel drills includes 16 different models of slab-rider, on-grade, and equipment-mounted to suit any concrete drilling need, from highway paving and lane additions to full-depth repair and airport work. Complementary products include a cure-spray trailer and a vertical utility drill. In addition, custom designs can be built for specific needs. All models can drill 5/8- to 2½-in. diameter holes that are 18 in. deep. E-Z Drill. 800-272-0121. www.ezdrill.com