Pengo Bolt on Rock Head Kit:

The BoRH (Bolt on Rock Head) patented from Pengo provides the ultimate solution for all your drilling applications. Designed to convert a standard aggressor dirt auger into a rock auger. The BoRH eliminates the need for an additional and dedicated rock auger. Featuring innovative wear caps and enlarged shoulders on the teeth for increased wear. When determining the cut diameter needed keep in mind that the cut diameter is 1 1/2" larger than the auger diameter. The BoRH system provides the ultimate solution across a wide variety of soil conditions. 

What's Included:

• Contains Boring Head
• Pilot Bit
• Wear Caps
• Bullet-Style Carbide Teeth
• All hardware needed to complete installation  

Compatibility with BoRH Attachments:

• With augers made with a one-piece cast auger head.  The head acts as the tooth and pilot mounting platform.
• The height of the new pilot is 2-1/2".  If the dimension is 1-1/2" then the auger head may not work well with the BoRH attachment.
• A compatible 1 piece auger head will have a cast auger head, The lettering will have the auger diameter followed by a "AR". If your auger does not have those markings, then the Auger Head may not work well with the BoRH attachment.