Features: Made of iron materials, strong and durable, wear-resistant and rustproof, not easily damaged. Anti-slip texture, suitable for gripping and throwing. No burrs, smooth finish. Compatible with most standard 2BA thread dart tips and tails. Provides excellent balance and stability, helping improve dart throwing performance. Great accessory for training and play. Suitable for both beginners and professionals. Specifications: Material: Iron Weights: 16g, 20g Color: Black, Silver 16g size: approximately 49.5 x 8mm (1.95 x 0.31 inches) 20g size: approximately 53 x 8.5mm (2.09 x 0.34 inches) Package Includes: 3 Pieces Dart Barrels Note: Please allow 1-2 cm errors due to manual measurement. Ensure you are comfortable with this before ordering. Due to differences in monitor displays, the actual color may vary from the image.