Dongguan Shuangli CNC Machine & Tools Co.Ltd is a trading and manufacturing company, our company produce all kinds of deep hole drilling machine including 3 axies gun drilling machine for die moulding, multispindle gundrilling machine for shafts, and 6 axies multi-function with milling, drilling and tapping functions. along with Machines, we have gun drill bits sales, brazed gun drills diameter start from 3mm to 45mm, solid carbide gun drills start from 1.0mm , widely applied on die moulds, automotive, aerospace, medical, energy etc.