Pricey, but these seem to be very nice. The idea of an impact wrench on my knockoffs scares me a bit. Does anyone need that much torque on a self tightening system? On Feb 8, 2013, at 11:51 AM, John Kuzman <jjkbj7 at yahoo.com> wrote: > Has anyone tried this tool? > > http://www.knockoffspinnertool.com/home