This is a Lionel 6-81251 O Fastrack O31 Manual Right Hand Switch. Features includes 1/4 curve to complete O31 45-Degree curve flawless non-derailing function allows trains to keep running regardless of switch position plug and play using track voltage or auxiliary power realistic illuminated switch lantern. Lantern base is interchangeable can move to the right or left side. Dimensions: Length: 10” Straight 33 3/4-Degree turnout. Manufacturer: Lionel Model Number: 6-81251