The turntable is designed for sunken installation for flush mount on a layout baseboard. It has 8 spoke tracks on the outer edge of the turntable pit. It can be expanded to 24 spoke tracks with the 89971 edge segments that can be snapped onto the turntable pit. The turntable has extensive detailing and prototypical paintwork. The model has been technically reworked and has been given new colors compared to older versions. It is operated by remote control using a controller included with it. It has a 5-pole electric motor for a drive mechanism. There is automatic shutoff of power to all tracks not lined up and in contact with the turntable deck. A Z power pack is included for a finer feel in operating locomotives onto the turntable and from the turntable to the stall tracks, as well as in the entire railroad maintenance facility area. The necessary power supply is also included. External turntable diameter 170 mm / 6-11/16". Deck length 132 mm / 5-3/16". The diameter of the opening required for installation on a baseboard is 145 mm / 5-11/16". Also included are 2 each 3-stall roundhouses which can be converted to 6-stall locomotive sheds. Also included is a model of a building for the management of a railroad maintenance facility. These cardstock building kits are precision laser-cut from high-quality architectural grade cardstock and can be built with cements available from your local hobby dealer. Also included are 6 block sections of track to stop the locomotives automatically.