Tillig 86321 — Model: TT gauge. Track ballast for dark brown intersection K1 15 degrees TT.With Styrostone®-Gleisbettung it is possible the tracks of the TT model track system quickly einzuschottern. The system offers several advantages: prototypical relevant material: macadam, fast processing by pressing the tracks, no nails, no glue or glue on the track, tracks can be taken out again, very good noise insulation, easy workability of Bettungskörper with a craft knife. The bedding is made in sheet-track pieces