*Sizes:1/4″Fx3/8″M,3/8″Fx1/4″M,3/8″Fx1/2″M,1/2″Fx3/8″M,1/2″Fx3/4″M,3/4″Fx1/2″M,3/4″Fx1″M,1″Fx3/4″M*CrMo material, heat treated*Chemically molybdenum for corrosion protection*Ideal for air, electric or manual impact wrenches*Packed by plastic case