1999 Pronovost P-740 Snowblower 010-5800536MFR Part # : PRONOVOST P-740. Unit of Measure : EACH. 1999 Pronovost P-740 Industrial PTO Driven Snow Blower Attachment. Main Auger Diameter: 23. Drive Chain to Auger: 80. Hydraulic motor for chute rotation 310 degrees and hydraulic deflector on “semi industrial shute”. All of our items are considered to.