Mule Team™ M4

This model is no longer in production. 

Spyderco’s Mule Team™ Series is an ongoing project that enables steel-obsessed knife enthusiasts to test different blade materials using the same exact fixed-blade design platform. Sold without handles or sheaths, Mule Team blades are also ideal for aspiring knifemakers and hobbyists.

This expression of the Mule Team concept features CPM M4, a high-speed, wear-resistant, tool steel. It is non-stainless steel. Its high content of Molybdenum and Tungsten gives it a fine grain size, greater strength, hardness and toughness. It is a triple temper heat treat to make it as tough as possible without brittleness. The grinding combined with the triple temper heat treating process can cause warping up to 50 thousandths (.050) of an inch which is not enough to affect the performance of the knife.

CPM M4 will provide high edge retention and impact resistance; you'll also find it's relatively easy to sharpen. All Mule Team blades are sold consumer-direct and available only at the Spyderco Factory Outlet or through Spyderco.com. 

Released: October 2008