... :Adjustable cast steel, galvanized 3.ID:25.4mm 1)Name:Shaft Coupler2)Material:Adjustable cast steel, galvanized3)Color:Silver/golden color ... , handle (handle, handle), bottom round frame, anti-fall at the end of round frame, round top shelf, top of the axle ... , aluminum, stainless steel and so on. Surface spray, electroplating, etc. Shaft coupler