Atlas O switches, like all pieces of the 21st Century Track System, feature solid nickel silver rails with a true prototypical profile. Add to this, die-cast frogs and points with cast-on nut and bolt detail, realistic throwbar linkage, and metal guardrails and you have switches second to none. The switches are prewired for positive electrical contact throughout their length and come with remote control switch machines. And the switch machines can be placed in three positions! The points are sprung for nonderailing action. You can even adjust the spring tension of the points to meet your requirements. Each Atlas O Custom Supreme Switch includes: Solid nickel silver rail Scale-sized ties with accurate tie plate, spike and bolt detail Detailed, all metal frogs and points Metal guardrails Blackened center rail Pre-wired Remote control switch machine which can be placed in at least 3 positions (4 on the wye) Sprung points for positive non-derailing action Comes complete with controller wire and all necessary hardware Can be used with Lionel Trainmaster Command Control Complete instructions included