These shafts are good aluminium alloy material, and they are a nice replacement and color assortment for the old ones. Thread surface for non-slip and easy to hold. Made of aluminium alloy materials, suitable for individuals of all skill levels, including beginners and experienced players alike. Features - Color: Black -Material:Aluminium alloy - Size: 5.00X0.60X0.60cm/1.97X0.24X0.24in - Can fully meet the individual basic darts training, find out the correct darts grip. It's durable and can increase the life of . - The thread size is the standard size for most darts and is perfectly suitable for most darts to fly. - Remove metal burrs to round tips, keep sharping and reduce bounce outs of . - Offers a unique front-load balance that optimizes your flight path in all new ways. - Specially designed to increase speeds and reduce drag. Provide excellent balance and great grip points. Package list: 6 x Shafts