直孔 - 从钻一个较小的孔与一个导频比特，那么把上述位上的扩孔器的底部。 孔首战将遵循由小位钻洞的道路。

较大的孔与小钻机 - 通过钻级的孔，较大的孔可钻较小的钻机。 较小的孔需要更少的功耗。

更换刀具和降低成本 - 在大多数孔开瓶器的设计中，刀具可以容易地更换。 替换的切割器的成本是成本的一​​小部分，以取代一个大三牙轮钻头。

大岩石钻头的成本 - 大口径牙轮钻头，不仅耗费了大量的，他们可能很难找到。 一个更经济的解决方案是使用使用更小的牙轮钻头段的孔揭幕战..

的flexability - 孔开罐器可以制造在几乎任何尺寸，并且可以被配置为钻透任何形成。

Straighter Holes - By drilling a smaller hole with a pilot bit, then attaching that said bit onto the bottom of the the hole opener. The hole opener will follow the path of the hole drilled by the smaller bit.

Larger Holes with Smaller Rigs - By drilling a hole in stages, larger holes can be drilled with smaller rigs. A smaller hole requires less power.

Replacing Cutters and Cutting Cost - On most Hole Opener designs, the cutters can be easily replaced. The cost to replace a cutter is a fraction of the cost to replace a large tricone rock bit.

Cost of Large Rock Bits - Larger diameter rock bits not only cost a lot, they can be difficult to find. A more economic solution is to use a hole opener that uses smaller tricone rock bit segments..

Flexability - Hole Openers can be fabricated in just about any size, and can be configured to drill through any formation.