Titan USA TR97653 Taper Pipe Reamers; Pipe Size (Inch): 1/2; Pipe Size (Decimal Inch): 0.5000; Small End Diameter (Decimal Inch): 0.6650; Reamer Diameter (Decimal Inch): 0.7510; Flute Length (Inch): 1-3/8; Overall Length (Decimal Inch): 3-1/8; Overal