Underground tunneling tools-China Factory rock drilling tools

（1）Thread: R22, R25, R28, R32;
（2）Material: 50R61;
（3）Bit diameter:33mm-127mm;
（4）Drill rod length:600mm-8000mm;
（5）Package: in wooden box or in carton;
（6）Supply ability:10000pcs/month;

（7）Delivery time: 7-10days;

This product uses CNC machines and vacuum heat treatment.

Button bits are our mainly manufacturing products, of which various sizes and styles are available and applicable for drilling different kinds of rock formations. A comprehensive range with 'Button', X and Cross with tungsten carbide tipped head configurations. 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 R25.which can be equipped with rock drilling machines such as Atlas Copco, Boart Longyear, Sandvick, Ingersoll-Rand, Furukawa and so on.