Torque Master's Tube Expanders are of self feeding and parallel rolling type i.e. the expanding rollers are suitably tapered to produce a uniform expansion and tightness of the tube. Tube Expanders are available in various types and models to cover tube O.D. Range from 1/4" to 4 1/2 " . Other accessories such as Serrating Tools, Tube End Facers are also available to cover tube O.D. range from 5/8" to 1".