Wang, building materials, rental center Huang: 13825408181: Road mode (down the road channel) 5 # -25 # model is complete, seamless (full size and thickness), steel (thickness), fasteners (light and heavy), round buckle (complete specifications), scaffolding (large frame) (small frame), channel (size, national non-standard complete), beam (16 # .18 #), foot net (full size). "Sufficient volume, low prices, courteous service", customers are welcome to discuss consultation! I wish you a happy life! !