For hole diameters from 2.500 to 4.000 inches (63.5 to 101.6mm).Work length is unlimited; extension adapters can be used to increase work length
Offered in Two Styles:
* U Series through hole with helix cageThrough-hole style with helix cage (self-feeding)
* U Series bottoming Bottoming-style for blind hole, with no-helix cage (machine-feeding)