JewelrieShop 10Pcs Stainless Steel Belly Button Ring, Sparkly Crystals Body Jewelry Piercing Ring Set 10 Pcs Package as Picture Shown, 3 Sets - Steel Color Set, Black Color Set, Gold Color Set 14Gauge Normal Pin Thickness. Ball Diameter: 5mm / 0.19 inches Top Ball, 8mm / 0.31 inches Bottom Ball. 10mm / 0.39 inches Pin Length Hypoallergenic Stainless Steel Metal Type, with Nickel-free Plated for Gold and Black Colors, Steel Color is the Original Metal Color Same Pin Thickness, so You Could Mismatch the Different Colors of Tops and Bottoms Easily 90-Day Exchange and Money Back Guarantee for Any Qualities Problems. Faster Amazon Shipping Methods (FBA Shipping Methods)