Kadee #524 HO Scale, 28" Diameter Smooth Back Metal Code 110 Wheels, Freight and Passenger

#524 - 28" Diameter Smooth Back Wheelsets (Code 110) - HO Scale Smooth wheelsets are most commonly found on diesel era rolling stock. Kadee® wheel sets are manufactured to the most exacting standards and feature: RP-25 contour, non-magnetic metal wheels and insulated needlepoint axles. #524 Instructions (pdf) Truck & Wheel Handout (pdf)  Twelve Sets(1 Set = 1 Axle) Axle Tip to Tip: 1.018"   Wheelset Features: Code 110 (.110") 28" Smooth Back Wheels Accurate markings Incredible detail true to prototype Non-magnetic Metal Wheels Smooth tracking Free rolling Contoured Insulated Axles RP-25 Free rolling wheels Needlepoint Axles Axle Tip to Tip: 1.018" Freight & Passenger Package Includes: (12) Sets #524 28" Diameter Smooth Back Wheelsets (Code 110)   The term Code 110 and Code 88 relates to the width of the wheels and has no relationship to track code. Code 110 wheels are .110" wide and Code 88 are .088" wide. Code 110 wheels are the common (or "Standard") width wheels and Co