HO Scale Train Accessories: Perfectly designed for HO scale model train enthusiasts, these gears are essential components for enhancing your model train setup 1/87 Train Gearbox Gear: Specifically crafted with 13 tooth, these gears are for a wide range of electric trains in the 1/87 scale, ensuring smooth and efficient operation Material: Made from pp, these gears offer durability and reliability, providing long term performance for your model trains Dimension: Each gear features a 13 tooth design that fits seamlessly into your train's gearbox system, ensuring optimal functionality and performance Bulk Packaging: Conveniently packaged with 100 pieces per pack, this set offers great value and ensures you have plenty of spare parts on hand for future projects or repairs Specification: Material: PP Size Chart: Package Size:10cmx10cm/3.94inchx3.94inch Package Includes: 100 1/87 Electric Train 13T Gears Note: Please allow slightly errors 1-2cm differences due to manual measurement.