Wilson Long-Reach Expanders expand tubes at points far back from the tubesheet, such as the point at which it passes through a baffle sheet.
Tube Outer Diameter: 5/8 to 41/2-Inch, 8 to 22 Gauge
Roll length: 1 1/2 or 2 1/4-Inch and Relieved
Extended reach: 6, 12, 18, 24, 30, 36, or 60-Inch