AA Medallion Sobriety Chip Holder 24" Necklace 18k Gold Plated Sober Gift Fits Wendell's Sobriety Coins 1 5/16" or 34x2mm See Picture To Match your Coin. 22" Necklace with Hoop that holds a Wendells AA Medallion or NA Chip 1.31" 34mm x 2mm or 1 5/16" Chip Bale unscrews allowing top of hoop to separate so you can insert a medallion and re-screw the bale. Stronger Hoop & Lobster Claw Clasp For Additional Security 18k Gold Plated Brass For Superior Strength