This reamer is designed specifically for backreaming through cobble, hardpan, sandstone, shale, limestone and any borable rock or hard soils. The conical design enhances cutting by exposing as much carbide to the surface as possible. Four blades with a ring … Continued
This heavy duty bit is designed for use in cobble, hard pan, sandstone, shale, limestone and other borable rock. Carbide roof bit inserts and side inserts offer aggressive cutting performance and excellent wear resistance for long life.