Flexible shower hose can be made brass or stainless steel , it is flexible and firmly. We have two styles as single lock and double lock . the pipe external diameter D:6-18 mm , the inner pipe is PVC hose or EPDM hose . the hose's nut can be made of brass or zinc alloy . You will find our packing is beautiful and quite well done and I'm sure the packing will make you satisfaction. If not , we can inform the manufacturer to have them packed as per your instruction.