A cordless drill with a ½” or 3/8” chuck and adjustable clutch is
recommended. However, there are a handful of drills with smaller
than normal 3/8” chucks that may prevent the rods from fitting
into the chuck.
In these rare cases, a drill adapter will be required. The adapter
can simply be a 1 ½” long x 5/16-18 threaded stud or bolt with the
head cut off. Gardus can also provide upon request.