Feature●Uses: For metal; Total length: 5.1 inches (130 mm); Number of threads: 5.5 inches (14 cm); Cross section: 0.3 x 0.02 inches (0.85 x 0.4 mm); Quantity: 12 piecesDescription Uses: For metal; Total length: 5.1 inches (130 mm); Number of threads: 5.5 inches (14 cm); Cross section: 0.3 x 0.02 inches (0.85 x 0.4 mm); Quantity: 12 pieces