have a look at these, more adjustable that origional footprints.
http://cgi.ebay.co.uk/Rothenberger-Footprint-One-Hand-Pipe-Wrench-9-8-8914_W0QQitemZ180414814745QQcmdZViewItemQQptZUK_Hand_Tools_Equipment?hash=item2a018f9a19
and these have always been my first choice along with me bahco...