Tungsten, in its purest form, has the chemical name Wolfram. These darts are made from 97% Wolfram using a high pressure, super fine injection moulding process. This produces a uniform atomic structure for superior strength and perfectly balanced weight distribution. Rear-weighted tapered barrel. 97% tungsten. 21g •Diameter 6.0mm •Length 50mm 22g •Diameter 6.4mm •Length 50mm 23g •Diameter 6.4mm •Length 50mm 24g •Diameter 6.7mm •Length 50mm 25g •Diameter 6.8mm •Length 50mm 26g •Diameter 6.9mm •Length 50mm