Product Advantages：
■ LILIN hole opener has a low torque, which enables the drilling by small rigs, thus reducing the drilling cost.
■ The cone units of LILIN underreamer are replaceable and each main body of the underreamer can be used many times, thus saving the cost for the customer.
■ The manufacturing of big-size tricone/multi-cone bits is faced with many difficulties and high costs, but these problems can be solved by LILIN hole opener. In addition, the manufacturer can produce hole openerof different specifications according to the customer's requirements.