This track extension set can be used to expand the track layout for all starter sets. It can be used for parallel track connections, passing sidings, a storage siding, and new routes. This track extension set is suitable for TRIX starter sets as well as for existing layouts. It can be expanded with the entire C Track program. Contents: 7 each no. 62172 straight track, 171.6 mm / 6-3/4" 7 each no. 62188 straight track, 188.3 mm / 7-13/32" 3 each no. 62224 curved track, R 2 / 24° 8 each no. 62230 curved track, R 2 / 30° 2 each no. 62611 left turnout, 24° 1 each no. 62612 right turnout, 24° 1 each no. 62671 left curved turnout, 30° 1 each no. 62672 right curved turnout, 30° 1 each no. 62977 track bumper, 80.5 mm / 3-3/16" The 74490 electric turnout mechanism from Märklin can be installed in the turnouts.