Performance: 6 gpm, 290 psi, 2800 rpm max. rated speed. * Ports: 3/4" HB inlet, 3/8" HB outlet from pump, 5/8" HB bypass outlet from regulator. * Shaft: 3/4" hollow shaft output (gear reduced for 2-3.5 hp gas engine), accepts 3/4" solid shaft. * Includes control unit (9910-Kit1990) * Oil-level sight glass.