CTA Tools 4359 White Spare Tire Tool-Ford Use for removal & installation of Spare tires mounted under vehicle. Working end - 3/8" square head. And avoids damage to the tools and the Spare tire hoist. Drive end - white. Application - Late model Ford F & E series. Tool length - 31"/ 79cm. Tool must be used with CTA 4357 hand crank. The square drive system between the hand crank and tool is 12mm. You cannot and should not use impact tools with this system. You should never use impact tools when removing or installing the Spare tire. The crank provides sufficient torque and avoids damage to the tools and the Spare tire hoist.