Plug If you are not need: Circumference below the holes in concrete for Slash. For a clean installation: Installation with tightening mounting near objects to win material around the edges and corners will not damage or installation. Mount Screws are haiandoro-: Perfect for concrete and sharp. The screws through the diamond cut notches cut pile with a heavy duty screw and finances improve smooth without screws for fastening to the mountain, excellent workability and holding power. For concrete, mortar, bricks, brick, wood and other aggregate with saddle, switch box, control box, lighting fixtures, plumbing, and wiring, bulletin boards, air conditioning equipment, equipment such as seats, door frame, shelves, mount the alarm can be used. VISIT. iifas. JP