Furowell is a structured-wall (corrugated outside, smooth inside) PE-HD pole foundation conduit, in black, zero halogen, flame propagating.
This pole foundation conduit is used to install all types of poles, masts and rods (e.g. for lamp posts, traffic signs, flag poles, mile markers, foundations for playground equipment etc.).
Use a commercially available socket adapter DN 68 to cut clean holes for Kabuflex DN 63.