Strong Herm Sprenger Dog Pinch Collar of Black Stainless Steel - 2.25 mm (1/11 inch) [HS1111073 - 2.25 mm Dog pinch collar] - $50.99 : Best quality dog supplies at crazy reasonable
1-step looper by The Bead Smith. Makes a 2.25mm loop in 24- 18 gauge w – My Supplies Source
Amour Crochet Hook B (2.25mm) – Clover Needlecraft, Inc.
14k Gold 2.25MM Rope Chain – FERKOS FJ
The BeadSmith 1-Step 2.25mm Looper Plier
The Beadsmith 1-Step Combo Pack - 1.5mm, 2.25mm & 3mm Looper Pliers - 24-18g Craft Wire - Instantly Create Consistent Loops for Rosaries, Earrings, Bracelets, Necklaces & Wire Jewelry in One Step - Walmart.com