Stainless Steel Propagation Discs - SET OF 3 Use these discs to grow an Avocado seed, Scallions, or Herb cuttings in water. Or try using the discs with other large seeds, bulbs, plant cuttings, or flowers. 1. Place the disc on top of any standard size drinking glass 2. Rest your sprouted seed/bulb/cutting at the center of the hole and ensure roots are completely submerged in water below. 3. Rinse and change with fresh water as needed These discs were created as an eco-friendly + reusable accessory for all of your propagation and presentation needs. Made from 100% raw stainless steel with no additional coatings or finishes. All discs are laser cut and hand finished, ensuring all cut edges are smooth to the touch. AVOCADO PROP DISC : Use this disc to grow an Avocado seed in water. SCALLION PROP DISC : Use to re-grow scallions. HERB PROP DISC : Use for re-growing herb cuttings and as an herb stripper. 0.1" (2.5mm) Stainless Steel Outer Diameter: 3.5"