3/8" Drive 6-Point Metric 13 mm Flank Drive® Semi-Deep Swivel Impact Socket | IPSFM13A Spark Plug Socket Sets (3/8") Heavy-duty butterfly hinges and durable

Heavy-duty butterfly hinges and durable

• Dual 80® Technology features a 80 tooth gear to provide 4

• Assure that jaw hook is properly positioned when in use

inches (mm) : 2-3/4 (70)

• Can also be used on older Cummins® NH Big Cam 4 diesel engines

3/8" Drive 6-Point Metric 13 mm Flank Drive® Semi-Deep Swivel Impact Socket | IPSFM13A Spark Plug Socket Sets (3/8") Heavy-duty butterfly hinges and durableSockets using the Flank Drive wrenching system grip the fastener on the flanks flats, delivering 1525% more turning power Pin collar eliminated with new proprietary pin welding process Laser welded pivot pin reinforces socket wall and allows 30 of smooth, uninterrupted action for efficient power transfer at any angle and greater accessibility in tight quarters Manufactured from special alloy steel and heat treated for optimum strength and durability