Pengo Attachments, inc 500 E. Highway 10 , Laurens , Iowa 50554 USA About Solutions products Downloads Companies Pengo Attachments, inc Products Model GP - Step Rock Auger Model GP - Step Rock Auger 0 Share Pilot Bit is the 375-TCH 171. 42' OAL single flight. Cast alloy steel head. Most popular related searches auger head Downloads related to this product Model GP - Step Rock Auger Brochure Customer reviews No reviews were found for Model GP - Step Rock Auger. Be the first to review! Add your review Publish your review Great! review successfully added!