Strokes Per Gallon: 26 | Stroke Length: 7-1/2″ | Overall Length 12″ Hose connection: 1/2″. Hose supplies: 3′ of 1/2″, 40″ of 5/16″ and 40″ of 1/4″. Made with long-life brass cylinders, high quality oil-resistant plungers, and impact-absorbing end caps. Pumps never need coaxing and give full suction on the first stroke. Ideal for bilge pumping, oil draining, diesel fuel transfer, and many other liquid transfer applications. Cylinder diameter: 1-1/4″.