are used for rotary blast hole drilling with air flush.

• Standard open roller bearing with air flush
• Central jet
• Spring-loaded back flow valve

are used for rotary blast hole drilling with air flush.

• Standard open roller bearing with air flush
• Side jet
• Leaf-type back flow valve

are designed for a wide range of drilling applications featuring bottom hole cleaning with mud flush, as well as for additional well operations.

• Standard open roller bearing with mud flush
• Central or side jet
• Replaceable nozzles