The C.A.M.P. Tour Nanotech Automatic Crampons are some of the the lightest steel crampons in the world! Sandvik Nanoflex Steel uses nanotechnology to create a superior metal that is 30% stronger and 30% harder than traditional chromoly steel thereby allowing us to use a thinner cross section 1.8mm that results in a crampon that is not only lighter, but stronger, more durable and stainless by design. The thinner cross section also creates sharper, thinner points that penetrate hard snow with ease. The automatic binding is compatible with most models of AT and Tele boots.