SILICON BRONZE MATERIAL; 2-1/2 INCH; 2.5 LENGTH - DECIMAL; 2-1/2 LENGTH - FRACTIONAL; 3/8 INCH NOMINAL DIAMETER; 16 TPI; 3/8 NOMINAL DIAMETER - FRACTIONAL; .375 NOMINAL DIAMETER - DECIMAL; PACKAGING QUANTITY 50 PIECES PER CARDBOARD BOX