Drill Rod 1, Drill rod length: 0.5 m, 0.8 m, 1 m to 6 m. 2, Factory Supply directly. 3, Widely usage ... 6 m.integral drill rod, drill bits 1. competitive price 2. high quality 3. factory supply directlyThe drill pipe specification:1 ... , Drill Bore Diameter: 40 mm2, Size: B22 (mm)3, Drill pipe length: 0.5 m, 0.8 m, 1 m to 6 m ...