Description: 【Material】: The Ho Scale Train wheels are made of alloy, ensuring long term use and resistance to wear and tear 【Good Performance】: These wheels offer good rotation, shock absorption, and low noise operate, enhancing your model train's performance 【Suitable for 1/87 Scale Trains】: Perfectly designed to fit HO 1/87 scale model trains and scenes 【Universal Compatibility】: Ideal for retrofitting 1/87 DC electric train carriages, making them a versatile addition to your model train accessories 【Package Includes】: Each pack contains 2 pieces of the Ho Scale Train Wheels with dimensions of 23.2.38cmx1.32cm/0.94inchx0.52inch each, providing great value for your money Specification: Material: Alloy  Size Chart: Total Length: 2.38cm/0.94inch Wheel Outer Diameter: 1.32cm/0.52inch Wheel Inner Diameter: 1.1cm/0.43inch Wheelbase: 1.43cm/0.56inch Package Includes: 2 HO Scale 1:87 Metal Wheels Note: 1.This is not infant toy , please take away from children to avoid eating. 2.Please allow slightly errors 1-2cm differences due to manual measurement.