These replacement train wheels are ideal for DIY projects, allowing users to assemble and DIY their train models with ease. Their sturdy construction ensures performance, while their compatibility with various train models makes them a versatile choice for hobbyists and collectors seeking reliable accessories. Features -Color:Dark Grey -Material:Alloy -Size:2.60X1.30X1.30cm/1.02X0.51X0.51in -Size:1.45X1.30X1.30cm/0.57X0.51X0.51in -Nice fit compatibility: precisely crafted to fit a wide range of electric train models, ensuring smooth operation and enhanced stability during use -Alloy construction: alloy train wheels are constructed with alloy material for durability, resisting wear and tear for extended usage -User-friendly assembly: simplified design makes installation quick, ideal for hobbyists looking to upgrade or maintain their train models -Enhanced quiet performance: alloy train wheels are designed to minimize noise during operation, offering a more enjoyable and immersive model train experience -Ideal for various settings: suitable for use in homes, educational environments, or clubs, catering to the needs of model train enthusiasts everywhere Package list: 4 x pair of train toy wheels