If you're not sure what my ring names mean, read the explanation on my FAQ page. NEW! Sampler Packs Half an ounce of each "useful" size in a given gauge. Great for testing new designs or doing size graduations. Millimeter Samplers    Inch Samplers Important Note! Some ring suppliers who list millimeter sizes are actually selling inch sizes. If you're trying to match existing rings that you already have, please ask me if that supplier uses true millimeter sizes or inch approximations. If I don't know the answer, I'll ask you to send me one of each ring size that you're trying to match. Jewelry Brass - Millimeter Sizes mandrel size ring   name     Price per Troy Ounce 2.25mm 2.25M21jb $11.00 2.5mm 2.5M20jb $9.50 2.5M21jb $11.00 2.75mm 2.75M19jb $8.00 2.75M20jb $9.50 2.75M21jb $11.00 3mm 3M18jb $6.50 3M19jb $8.00 3M20jb $9.50 3M21jb $11.00 3.25mm 3.25M18jb $6.50 3.25M19jb $8.00 3.25M20jb $9.50 3.25M21jb $11.00 3.5mm 3.5M17jb $5.50 3.5M18jb $6.50 3.5M19jb $8.00 3.5M20jb $9.50 3.5M21jb $11.00 3.75mm 3.75M16jb $5.00 3.75M17jb $5.50 3.75M18jb $6.50 3.75M19jb $8.00 3.75M20jb $9.50 3.75M21jb $11.00 4mm 4M16jb $5.00 4M17jb $5.50 4M18jb $6.50 4M19jb $8.00 4M20jb $9.50 4M21jb $11.00 4.25mm 4.25M15jb $4.00 4.25M16jb $5.00 4.25M17jb $5.50 4.25M18jb $6.50 4.25M19jb $8.00 4.25M20jb $9.50 4.25M21jb $11.00 4.5mm 4.5M15jb $4.00 4.5M16jb $5.00 4.5M17jb $5.50 4.5M18jb $6.50 4.5M19jb $8.00 4.5M20jb $9.50 4.75mm 4.75M14jb $4.00 4.75M15jb $4.00 4.75M16jb $5.00 4.75M17jb $5.50 4.75M18jb $6.50 4.75M19jb $8.00 5mm 5M14jb $4.00 5M15jb $4.00 5M16jb $5.00 5M17jb $5.50 5M18jb $6.50 5M19jb $8.00 5.25mm 5.25M14jb $4.00 5.25M15jb $4.00 5.25M16jb $5.00 5.25M17jb $5.50 5.25M18jb $6.50 5.5mm 5.5M14jb $4.00 5.5M15jb $4.00 5.5M16jb $5.00 5.5M17jb $5.50 5.5M18jb $6.50 5.75mm 5.75M14jb $4.00 5.75M15jb $4.00 5.75M16jb $5.00 5.75M17jb $5.50 6mm 6M14jb $4.00 6M15jb $4.00 6M16jb $5.00 6M17jb $5.50 6M18jb $6.50 6.25mm 6.25M14jb $4.00 6.25M15jb $4.00 6.25M16jb $5.00 6.25M17jb $5.50 6.5mm 6.5M14jb $4.00 6.5M15jb $4.00 6.5M16jb $5.00 6.75mm 6.75M14jb $4.00 6.75M15jb $4.00 6.75M16jb $5.00 7mm 7M14jb $4.00 7M15jb $4.00 7M16jb $5.00 7.5mm 7.5M14jb $4.00 7.5M15jb $4.00 8mm 8M14jb $4.00 8M15jb $4.00 8.5mm 8.5M14jb $4.00 9mm 9M14jb $4.00 9M15jb $4.00 9M16jb $5.00 10mm 10M14jb $4.00 10M15jb $4.00 10M16jb $5.00