These are Kadee Self-Centering Bettendorf Double Truss Trucks / / FEATURES: Precision engineered and prototypically detailed! / Prototypical, fully sprung trucks with metal sideframes and bolsters / Non-magnetic, 33" blackened metal wheels with smooth backs, / accurate markings and RP25 contour design. / Free rolling contoured insulated axles / Factory assembled / Made in the USA / Detailed instructions / / INCLUDES: (2) #550 Trucks / Mounting Hardware / / SPECS: Scale: HO 1:87 / kr11/15/06