World's first and only Tungsten Carbide Barrel Prototype No Groove Fine Straight USED3 Worksworth Japanese Dart Barrel Extremely Rare Item Not for Sale Prototype, Test Throw Item You can really enjoy the fun of a tungsten carbide barrel (hard metal). It penetrates incredibly well. The release and flight extension are surprisingly good. Worksworth has stopped producing and taking orders for barrels, so this is a rare item. Maximum diameter 6.5mm Barrel weight 15.5g Length 43mm Flies beautifully and penetrates firmly. The extended flight you can only feel with a tungsten carbide dart barrel. A very interesting item. It flies with minimal effort, so the feeling of penetration is pleasant. Currently, tungsten carbide barrel production has been discontinued, making this a rare and hard-to-find item. A rare chance to experience a tungsten carbide barrel, hard metal. Although the barrel itself is light, hard metal has finer particles than heavy metal, so it has a sharpness of flight that can only be felt with hard metal. Those who have touched a tungsten carbide barrel for the first time will be surprised. It's interesting how well it flies and extends when you can trace the line without straining. It's similar to how a tightly packed sandball flies better when thrown. The mainstream material for commercially available products is tungsten alloy, but items like 95% and 80% are made of heavy metal tungsten alloy, which is manufactured by sintering the material and then cutting it. The cutting edge used in that cutting process is hard metal. This barrel is made of that hard metal. The processing is very time-consuming. It's a metal that other companies can't easily process. It cannot be mass-produced by cutting like current heavy metal barrels. The world's only tungsten carbide barrel. The metal hardness is almost three times harder than heavy metal, so the cuts wear down slowly, allowing for a long period of use. This is a secondary or tertiary distribution item and has been stored by an amateur, so please refrain from bidding if you are concerned about minor details or are looking for a perfect, pristine item. Please refer to the images and no claims will be accepted.