Drill Rig Operation Guide 

This kind of machine is cheaper in China, depending on the depth and diameter of your drilling.

Geralmente é um martelo DTH de alta pressão de ar, e existem muitas marcas na China.

You don't want a Chinese hammer. Get a German one. Bulrock

​@@helidrill7464 Chinese hammers are more cost-effective. You'll know when you've used it.

@@brandtu7527 I have used a Chinese hammer. They don't last. The barrels are too thin. If you use a quality bit like a Karbo the piston gets all beat up because the metal quality isn't the same standard in German hammers. I'll put a halco or a bullrock against any Chinese hammer.

Bulroc