This gold rhinestone whistle is perfect for sports coaches. Its elegant design adds a touch of sophistication to any game while providing a clear, powerful sound. With its durable construction, this whistle is sure to be a staple in your coaching gear for years to come. * 18K Gold Plated * Brass * Cubic Zirconia * Size: 5x6x5mm All charms come with 18 gauge 24k gold plated stainless steel jump rings, pre-installed to each charm. Our jewelry is carefully curated to make you feel beautiful and confident. We take pride in utilizing premium components sourced from high-quality materials. For instructions on install charms to necklace or carabiner, please see our video tutorial here.