3/8″ F x 1/2″ M Locking U-Joint Adapator

• Patented hex ball and socket design eliminates connecting pin for increased safety
• Ball and socket distributes force evenly for greater torque and longer life
• Eliminates broken connecting pins, the major source of U joint failures
• Drive anvil locks into straight position when flex function is not required
• Can be left on impact wrench and engaged only when needed
• Patented design combines drive adaptor and universal joint into one handy tool