This set of 4 caster wheels have an extremely unique style with multiple holes for attachment to your project and a great patina. The different holes are set in a way that you can attach the caster wheels in multiple directions depending on your needs for your project. the wheels themselves of the casters measure approximately 1.5" in diameter. Measurements of the entire caster are approximately 5" x 5" x 1". These are versatile casters that will add a uniqueness to any project! Please note that these weigh approximately 8 lbs, so I'll be shipping them through flat rate shipping in an attempt to keep the shipping costs down. If you'd prefer a different shipping method, please contact me prior to purchase so I can provide an accurate shipping quote.