BAPL-3020 has a description of EZ2542S 4.6GPM 2500PSI 1750RPM 24mm

• Maximum Volume: 4.2 GPM
• Maximum Discharge Pressure: 2500 PSI
• Maximum Pump Speed: 1750 RPM
• Maximum Inlet Pressure: 125 PSI
• Bore: 18mm (.708")
• Stroke: 13mm (.512")
• Crankcase Oil Capacity: 14.0 oz.
• Maximum Fluid Temperature: 165 F.
• Inlet Port Thread: 1/2" FPT
• Discharge Port Thread: 3/8" FPT
• Shaft Diameter: 24mm (.945")
• Weight: 18 lbs.
• Dimensions: 8.6" x 8.7" x5.5"

WARNING This product can expose you to chemicals, including Lead which are known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.  As alarming as the proposition 65 warnings may appear, you can rest assured that the products we sell remain the same as in the past. We encourage normal hygiene and discourage placing any of our products in your mouth, as they are not intended for human consumption.