Balustrades of metal; bars for metal railings; door handles of metal; knobs of metal; sash lifts of metal; pipes of metal; covers for pipes of metal, namely, metal pipe muffs; spring-shaped metal knobs with non-slip function; cover for spring-shaped metal knobs with non-slip function, namely, casings of metal; cover for spring-shaped metal pipe with non-slip function, namely, metal pipe muffs; non-slip covers for metal handrails in the form of a spring for use in shower rooms, namely, casings...