600 x 6 kit with magnesium wheel and aluminum brake. Static capacity 2,500#. Kit used on defiant aircraft. Weight per kit 19.90 lbs. Each kit contains 2- CWB40-75B wheel assemblies with 2: CWB164-15A discs and 2: CWB30-52 brake assemblies which include 8 – CWB66-105 linings. Kit also includes 2 ea CWB10-34 master cylinders. USE AX6 – 1-1/2″ axle and MS21025-24 nut. Magnesium NOT compatible with salt.