PURE COPPER CONSTRUCTION: Made with 99.99% pure copper material at 0.6mm thickness for superior durability and effectiveness PERFECT SIZE: 4-inch diameter disk designed to fit most standard bird baths while providing optimal surface area for water purification. 1PCS disk suitable for bird bath tubs with a diameter of approximately 12 inches, and larger bird bath tubs may consider using multiple copper disks VERSATILE USE: Suitable for both indoor and outdoor applications including garden fountains and backyard bird baths COMPLETE SET: Package includes 2/4/6 copper disks to accommodate multiple bird baths or provide replacement backups Adorable Bird Lover's Gift Set: Perfect for Backyard Birdwatchers & Nature Enthusiasts Transform your garden's bird bath into a pristine oasis with these premium copper purification disks. Each set includes 2/4/6 pieces of 99.99% pure copper disks, measuring 4 inches in diameter and crafted with a robust 0.6mm thickness for enhanced durability. These versatile disks are designed for both indoor and outdoor use, making them perfect for your garden, backyard, or patio bird baths. The substantial 4-inch diameter provides optimal coverage for most standard bird baths, while the reinforced construction ensures long-lasting performance through various weather conditions. These copper disks blend seamlessly into your outdoor decor while serving their essential purpose. The set of four allows you to maintain multiple bird baths or keep replacements on hand. Add these copper disks to your bird bath and create an inviting space for your feathered visitors to enjoy.