Shop the DEWALT TOUGHWIRE D-Clip, 7/16" (1/2" Hole). The D-Clip Wire Component is a one-piece clip used to fasten TOUGHWIRE to the mounting surface on flat or sloped surfaces. TOUGHWIRE Loop End Wire Assembly products (sold separately) are looped through the D-Clip, then anchored to the structure with DEWALT Anchors and Fasteners (sold separately).