Ferrule Tubing Push-on Cones (End cones) are used as ends on Ferrule Tubing (Tie-rod sleeves) to space shutters for the thickness of the concrete casting. Fits on the inside of the Ferrule Tubing (Tie-rod sleeve). Can be removed after the shutters have been dismantled and be used again. These Ferrule Tubing cones allow 10mm spacing on each end of the Ferrule Tubing.