3.5 - 4.5 Inch Class Rock Drill* Yh70 Drifter W/ 2,097 Percussion Hours* Cummins Qsb6.7 Tier-3 Diesel Engine Has 2,309 Hours* Extendable Boom Hydraulic Centralizers Recent Updates Made Through Our Shop As Well As A Freshening Of The Paint. Ready For Your Job Site!