... the high quality cold-rolled steel plate Wooden Guard Board Double Column BookshelfAdvanced design idea,clever conception and mature technology make our ... ,6 pieces bookend bars, 12pcs hanging plates, two pieces vertical columns,one top plate and 2 pieces tie rodsThe sub ... shelves,6 pieces bookend bars, 12pcs hanging plates,one piece vertical columns,one top plate and 2 pieces tie rodsMaterial:Adopting ...