Kadee/Bettendorf 50-Ton Fully Sprung Metal Trucks with Whisker(R) Couplers - Kit in HO Scale (Part # 380-502). These trucks feature Code 110 (0.110 wide) 33' smooth back 'standard' RP-25 wheels. Mounts with a #2 or 2-56 screw. Introduced in the 1930s, the Bettendorf Truck was an AAR standard used in interchange service until 1993. The Kadee models represent 50 ton trucks for 100,000 pound cars. They come with ready-to-mount metal Whisker® Couplers, accurate markings, incredible detail, non-magnetic metal wheels, highly flexible sprung trucks, metal side frames and a fully sprung bolster, smooth tracking with free rolling contoured insulated axles, and RP-25 free rolling wheels.

Using these HO scale Kadee/Bettendorf 50 - ton trucks is easy. First, you can mount them with a #2 or 2 - 56 screw. Just make sure to place them securely on your 100,000 - pound cars. When it comes to maintenance, keep the wheels clean. You can use a soft cloth to wipe away any dirt or debris on the non - magnetic metal wheels. Avoid using harsh chemicals as they might damage the finish. Also, check the springs regularly to ensure they are still flexible. If you notice any parts that seem loose or damaged, it's best to replace them right away. Enjoy a smooth and realistic model railroad experience with these high - quality trucks.