The Snap-on 3/8” Drive Metric Flank Drive 6-Point Deep Socket Set, No. 212SFSMY, provides a reliable solution to complete a wide range of tasks. Snap-on sockets utilize the Flank Drive Wrenching System which increases torque up to 20 percent while helping to prevent the rounding of fasteners, according to the company. Snap-on sockets’ thin walls provide maximum accessibility without sacrificing strength. The 12-pc set includes sockets, ranging 8mm to 19mm (Nos. SFSM8 through SFSM19) and a magnetic storage tray.