Detachable cones for providing covers to the tie-reinforcement.
1.To keep the forms the correct distance apart a plastic PVC pipe sleeve is cut to length and plastic cones are put onto the end.
2. When the rods are withdrawn and the formwork stripped, the plastic sleeve is left behind, but the cones can be flipped out and the hole is patched with cement mortar.
3. Any new section of the wall or slab edge concrete formwork will use the holes left in the previous concrete to firmly fix the next layer of formwork, with speed bolts again.