Features: Achieve accurate arrow placement with these plastic pin nocks. Perfect for arrow shafts, they ensure a secure fit. Crafted from PC materials, these pin nocks are durable and safe to use. Offering consistent flight, they are ideal for hunting and target practice. Suitable for various skill levels, these pin nocks provide a reliable shooting experience. Specifications: Materials: PC Package Weight: Approximately 15g Color Options: 9 colors available as shown in the picture Type: 17.7mm or 18.7mm (optional) Size: Approximately 18.7mm / 0.73in Package Includes: 20 pcs arrow nocks Note: Please allow 1-3mm error due to manual measurement. Due to differences in monitor displays, the picture may not reflect the actual color of the item.