Better material to ensure a long security! We can provide plastic plug Material:Nylon Size:5-10, 25-65 Dia(mm)Length(mm)5256408501065Suitable for: Concrete, lightweight concrete,sand-lime bricks,solid red bricks,pumice solid bricks,solid gypsum,natural stone etc.Scope of application: Closet, lighter hanging cupboard, curtains chute, skirting boards, electrical switches, cable trough, lamp, cable ...