THIS IS A AEROSPACE COMPONENTS VACUUM PUMP, THESE PUMPS PULLS ABOUT 13” to 18 OF VACUUM AT 3000 RPM’S AND 38 CFM!!! THIS IS WHAT YOU GET IN THE KIT. ONE 3 VANE VACUUM PUMP WITH A 5 INCH PULLEY AND MOUNTING BRACKET. MANDREL DRIVE SYSTEM WITH A 3 INCH AND 5 INCH PULLEYS. VACUUM PUMP RELIEF VALVE. 5 FT OF BLACK BRAIDED -12 AN HOSE. (3) STRAIGHT # 12 AN HOSE ENDS. (1) 90 DEGREE SWIVEL -12 AN HOSE END. GRADE 8 HARDWARE INCLUDED. 100% MADE IN THE USA! ALL YOU NEED TO SUPPLY IS THE V-BELT.