<STAINLESS #01> JOKERDRIVER's stainless steel barrel. Stainless steel versions of "Zero-ZERO-ST5" and "EXTREME APEX". The polygonal sections, which are the main feature, are also reproduced, and this barrel is especially recommended for players who are already using it. It's also a great barrel for those considering switching to the above barrels. Because it is more than 10g lighter than the tungsten version, it is ideal for checking your form and flight, and for practicing how to throw beautifully. In throwing sports, practicing throwing with the non-dominant hand is also considered one way to improve, and it is recommended to start practicing with a lighter barrel in that case. Of course, it can also be used as your main barrel. <SPEC> Length: 41.5mm MaxDia: 7.4mm Weight: 8.9g Material: STAINLESS BALANCE: CENTER