DTH Class 4.0 - 7.0 up to 140'ft Deep Without Reloading Carousel And Greater Depth with Reloading CAT 3406E (C15) Tier-II Turbo Charged After Cooled Diesel Engine Carousel Holds Six Rods 20'ft long Onboard Sullair Air Compressor Capable of operating at 900 CFM @ 500 PSI or at 1050 CFM @ 350 PSI