... ore, tunnel. Detailed Product Description of Drill RodNameQualityLengthGOrdinary Grade0.5 m, 0.8 m, 1 m to 6 m. ... 1 m to 6 m.G11Export High Quality Grade0.5 m, 0.8 m, 1 m to 6 m ... .G111The Best Quality Export Grade0.5 m, 0.8 m, 1 m to 6 m ... , Size: B22 (mm)3, Drill pipe length: 0.5 m, 0.8 m, 1 m to 6 m.We ... chance to cooperate with you in the future. 0.5 meter, 1 meter, 2 meters, 3 meters B22 ...