The inner diameter of 50mm, the European standard wiring pipe, PVC can be connected, insulated, and the withstand voltage can be determined, and the spot red, white and gray three-color conduit can be determined

The inner diameter of 40mm, the European standard wiring pipe, PVC can be connected, insulated, and voltage-resistant, and the stock red, white and gray three-color conduit

Inner diameter 25mm European standard wiring pipe PVC can be connected to insulated and voltage-resistant can be fixed, spot red, white and gray three-color conduit