Snap-on 3/8 Drive 12pc 6pt 8-19mm Metric Flank Drive Shallow Socket Set 212FSMY. Good condition, no owners marks. Includes FSM81-FSM191 (8-19 mm). Snap-on® sockets using the Flank Drive® wrenching system grip the fastener on the flanks/flats which deliver 15-25% more turning power. Nickel-chrome alloy finish resists rust and corrosion. Manufactured from the highest quality proprietary steel, providing optimum strength and durability. 6-point configuration and Flank Drive® wrenching system. Please see pictures for more detail. I appreciate your understanding in this matter. Thank you for looking. Please subscribe to our newsletter.