Features and Benefits: Premium design for greater durability;Includes: 3/8″ Tall shift knob assembly;Height: 1.4″ from top of shift knob to bottom of anvil;Instructions for installation included;Tools required for assembly: snap ring pliers, flat head screwdriver;Tools for assembly not included;The 3/8″ High Speed Ratchet Tall Shift Knob Assembly can replace the original anvil assembly on the M12 FUEL? 3/8″ High Speed Ratchet for easier change of direction.