Used on furniture drawer systems, for dressers, hutches and night stand drawers. Opening for metal track on larger piece measures 15/16 in x 3/32 in. Kit includes 2 dark-brown, plastic track case guides and 2 track guides, 4 white, plastic corner glides, 8 ring shank nails for nailing in corner glides (3/4 in x 14-1/2 ga.) and 8 Phillips drive, pan head screws for installation of guides (#6 x 5/8 in).