Features: Make of iron materials, sturdys and durability, wear resistance and rustproof, and not easily damage. Antiskid texture, suitable for grippings and throwing. No burrs, exquisites. The dart Barrels have 2BA thread, suitable for most standard 2BA thread dart tip and tail. Provide excellent balance and stability, make you better train dart throwing. Good accessorys for your training and play. This dart Barrels is suitable for both novices and professional. Specifications: Materials: Iron Color: Black/Silver Length: about 45mm/1.77inch Diameter: about 8mm/0.31inch Weight: 13g Quantity: 4pcs Package Includes: 4pcs Dart Barrels note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.