Quantity   Component name
1 × Rod Stock Salvageable from scanners and printers usually. 6mm Default
2 × Springs for Tensioner Must fit around (Socket Shoulder Screws)
2 × Socket Shoulder Screws
1 × Wingnut that fits (Socket Head Cap Screw)
1 × Socket Head Cap Screw An edge of this gets ground away so it leverages against the side of the (Rod Stock).