Several improvements in the design and manufacture of tube expanders have been pioneered by Powermaster. The New Generation II series Condenser Tube Expanders will outlast any other manufacturers expanders! Guaranteed! Please contact us for warranty information and conditions. Powermaster expanders are competitively priced due to high production volumes and will offer you the best value for money by a long margin! Powermaster Generation II series Condenser Tube Expanders is the preferred tool of choice at over 2000 companies worldwide!