90W ?7.94x40mm tungsten dart billet price is 3.06USD/PC on Jul.31, 2018. Darts billet can be made of tungsten, nickel, copper etc, but tungsten, with high density and environment friendly, becomes standard material for billet. Tungsten dart billets are round bars used for making barrels, which are main part of dart. Because of technical difficulties with manufacturing, 100% tungsten dart is not available, so all "tungsten" darts you see on the package label are actually made of tungsten alloy.

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