Check the listing for details. Roots type: Rotary Lobe Air Blower, Compressor / Vacuum Pump 17CFM HDL-6.9/86. Condition: New. Listed at 644.70 USD. GET YOURS NOW & $AVE!! Limited quantity!!Rotary Roots Lobe Blower. New in box. Includes: Inlet Filter Assembly with Filter element, a Drive belt, pulley installed on blower shaft and an additional pulley which may be used for attaching to your electric or gas drive motor. Rated for electric drive motors: 3/4 hp to 1.5 hp OR 3hp to 5hp combustion (gasoline or diesel) motor. 4 Bolt mounting plate on bottom measures: 4.75 inch x 3.25 inch Rectangle Plate with a: 2 3/8" x 3 15/16" center to center bolt pattern.Specs: Output Port: 1 inch USA female pipe thread (FPT) Output Pressure: .49kpa / 7.1psi / 16.5 ft H2O Output Flow: .5 M3/Min / 8.33 LPM / 17.7 CFMSize: 10 inch x 9 inch x 7.75 inches (Larger Size Lobe Blowers also in stock, contact us with your needs & additional information)Shipping Weight: 28LBMod: HDL-6.9/86LB, New in box. See pics. We SHIP FAST!! Drive Speed: 1700 - 2000 RPM for peak efficiency. (1100rpm min / 2200rpm max).If needed: We also carry the combustion engine frame rack & mounting kits for these units which include the adjustable mount in addition to the pulley & drive belt available upon request with pump purchase for $85 additional cost.We SHIP FAST!!