Expander with 3/4” (19.05 mm) long rolls suitable for tube sheet thicknesses from 1/8” to 3/4” (3.175 mm to 19.05 mm).
Expander with 1 1/4” (31.75 mm) long rolls suitable for tube sheet thicknesses from 1/2” to 1 1/4” (12.70 mm to 31.75 mm)