Modeled Sizes: The barbell is a standard 16 gauge(1.2mm) hypoallergenic surgical steel belly piercing accessory.The bar is about 1/4 inches long， not including the screw off balls. The balls are 4mm each.Cute Beautiful and high quality!! **************shipping************** Shipping by china post air mail (which always takes 15-30 days)， most of the time it will arrive in 15 days， but rare of time it will more than 25-30 days. (The bad weather influence shipping sometimes). If the mail hasn't be delivered in 30 days please contact me and I will check it for you I will ship to your Wish address unless instructed during purchase. Please make sure your Wish address is correct. And your telephone number will be very helpful for the shipping. feedback-------A positive feedback will be highly appreciated!:)Pls don't give me a negative feedback before contact me. Pls kindly offer me the opportunity to make you satisfied.