R32, T38, T45, T51, GT60 Thread Button Bit, Used in bench drilling, underground long hole drilling to match extension drill rod, heavy duty top hammer ​Premium designs and steel and premium tungsten carbide insert grade T6 supplied by Boart Long year, Offers industry-leading strength and penetration rates for more productivity,Excellent straightness and hole clean quality,Get max.drilling performance for rock drills with long life to save up fuel cost rate.

R32, T38, T45, T51, GT60 Thread Button Bit, Used in bench drilling, underground long hole drilling to match extension drill rod, heavy duty top hammer ​Premium designs and steel and premium tungsten carbide insert grade T6 supplied by Boart Long year, Offers industry-leading strength and penetration rates for more productivity,Excellent straightness and hole clean quality,Get max.drilling performance for rock drills with long life to save up fuel cost rate.

Round Body MM Extension drill rod Drifter Rod Extension rods are one major spare part in terms of drill application area, there are two shapes of extension rods, one is round type, another one is hexagonal type. But all extension rods are threaded and made by hollow drill steels, this means usually

Feature Of The Extension Drill MF Rod