Tested by Barry Morris, expert MX'er.  "I used them for 32 hours on trail rides, motocross and enduro, through rivers, hard and soft ground, mud and sand.  There was plenty of life left in them.  All in all, these are hard wearing pads and would be well suited to trail riders and recreational riders who want a long lasting replacement pad that works well in all conditions."Artrax sintered metal pads are made of copper, tin, graphite and other metallic elements which are far superior to the metal powder mixed into standard organic pads. Artarx sintered metal pads are manufactured for all-weather applications and high temperature stability.