3-1/8" Flank Drive Shallow Impact Socket

Snap-on® impact sockets are heat treated to optimize impact service life with a lower hardness than hand sockets and are able to withstand repeated cycling loads of impact wrenches. Snap-on® uses a proprietary blend of special alloy socket steel that provides long life and great strength. Flank Drive® wrenching system delivers up to 20% more turning power without slipping or rounding while exceeding ANSI® performance standards.