Stegmeier LLC’s Drain Dowel is a 3/8″ Fiberglass dowel recommended to be used on all of our two-piece drains. Stegmeier recommends that you drill and pin the base of all Stegmeier two-piece drains at 3′ intervals to help prevent damage caused to the drain from concrete movement. These dowels are precut at 12″ lengths, eliminating the need to cut rebar on the job site.