#5 Spline x 13/16" Square - 4 Point.
CP7782-SP6 Chicago Pneumatic #5 Spline Drive Impact Wrench 1,920 Ft Lbs Torque
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CHICAGO PNEUMATIC 797-6 & 7640-6 #5 SPLINE 6" ANVIL PART #'s: CA052805, KF130165
Chicago Pneumatic CP7782-SP6 1" Dr. #5 Spline 6" Shank 1920 Ft/Lbs Impact Wrench
Grey Pneumatic 1213 Impact Socket Set 5/16- 1” Like New (p)