Button bit - China rock drilling bits for drilling granite with high quality

（1）Thread: T38, T45, T51, T60

（2）Type: drill bits

（3）Bit diameter: 48mm-205mm

（4）Drill rod length: 600mm-8000mm

（5）Package: in wooden box

（6）Supply ability: 10000pcs/month

（7）Delivery time : 7-10 days

Button bits are our mainly manufacturing products, of which various sizes and styles are available and applicable for drilling different kinds of rock formations. Button Bit designs include; Standard, heavy duty, drop centre, ballistic, parabolic and retract and combination options. Available with all popular international thread forms such as T51,which can be equipped with rock drilling machines such as Atlas Copco, Boart Longyear, Sandvick, Ingersoll-Rand, Furukawa and so on.Thread button bits could be with Rope thread R22, R25, R28, R32, R35, R38 and T thread, T38, T45, T51, T60 etc.

Extension rods are made by hollow drill steels; there are two shapes of extension rods, round type and hexagonal type. This hollow hole are usually named flushing hole, used for transmitting water or air during drilling，And the threads can be used for connecting couplings, shanks, couplings or bits.