3 times the ANSI/ASME standard for proof torque. Each socket size meets a minimum of 1.1/2 Inch Drive x 11/32 Inch Deep 12-Point Impact Socket They're designed for use with both friction ring anvils and detent pin anvils..
Tekton Flare Nut Crowfoot Wrench sizes scale optimally with fitting depths to achieve the best possible combination of engagement, access, and strength. 3/8 Inch Drive x 1 in.