wreath with cones for drilling rock mounted on mini excavator

drill gas wreath hard industry fiber optic skid steer rotate mini excavator micro trench bobcat drilling equipment hole closeup digger background gauge bore borer boring chisel cone cutter cutting exploration fuel gasoline isolated milling natural oil rig rock roller steel tool torque turning white axial bits carbide force insert tooth tricone construction asphalt concrete tractor technology cones mounted execution mini-trench